Why is the krebs cycle so important if it only produces 2 atp molecules.

Answers

Answer 1

The Krebs cycle is an incredibly important part of metabolism. Despite the fact that it only produces two ATP molecules, the cycle provides a critical link in the production of energy from food.

The Krebs cycle is a cyclical metabolic pathway that converts the energy from carbohydrates, proteins, and fats into a usable form of energy. The cycle begins with the conversion of a molecule of glucose into two molecules of pyruvate. From there, the pyruvate is converted into acetyl-CoA, which enters the cycle.

During the cycle, numerous biochemical reactions occur, resulting in the production of two ATP molecules and other molecules that are necessary for other metabolic pathways. The cycle also helps to regulate the level of oxygen in the body, as well as helping to rid the body of waste molecules.

know more about Krebs cycle here

https://brainly.com/question/13153590#

#SPJ11


Related Questions

Que tipos de enlaces o puentes de queratina se alteran cuando el cabello se humedece?

Answers

When hair gets wet, the hydrogen bonds between keratin molecules in the hair are broken. These bonds are weak and temporary, but they help to maintain the shape and structure of the hair.

Other types of bonds between keratin molecules, such as disulfide bonds and salt bonds, are not typically affected by water. Disulfide bonds are strong and permanent, and they give hair its strength and elasticity. Salt bonds are also relatively strong, and they help to maintain the shape of the hair.

However, both types of bonds can be broken down by chemical treatments, such as hair relaxers or perms. In contrast, the hydrogen bonds broken by water can be re-formed when the hair dries, which is why hair often returns to its original shape after it has been wet.

To learn more about keratin follow the link:

https://brainly.com/question/28790980

#SPJ4

The complete question is:

What types of keratin links or bridges are altered when hair gets wet?

discuss two ways social media benefits learners when completing assessment tasks.

Answers

Social media can benefit learners when completing assessment tasks in various ways.

Firstly, it provides a platform for students to collaborate and share ideas, which can lead to a deeper understanding of the subject matter.

Secondly, social media can also provide learners with quick access to a wide range of resources and information.

Through social media, learners can connect with their peers, form study groups, and share resources, all of which can contribute to a more holistic and collaborative approach to learning.

By following relevant experts, organizations, or hashtags on social media, students can stay up-to-date on the latest research, news, and trends in their field of study.

This can help them to better understand complex concepts and theories, and can also provide inspiration and motivation for completing assessment tasks.

Additionally, social media can be used to connect with professionals in a given field, providing opportunities for mentorship and guidance.

To know more about "Hashtags" refer here:

https://brainly.com/question/14535766#

#SPJ11

Key vocabulary for science newtons laws newton (n) - the ____ for the ______ of ______ an object contains.

Answers

Key vocabulary for science - Newton's Laws

Newton (N) - the unit for the force of motion an object contains.

The Newton (N) is the standard unit of measurement for force in the International System of Units (SI). It is named after Sir Isaac Newton, who developed the three laws of motion that are the basis of classical mechanics.

The first law, also known as the law of inertia, states that an object at rest will remain at rest, and an object in motion will continue to move in a straight line with a constant velocity, unless acted upon by a net external force.

The second law states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.

The third law states that for every action, there is an equal and opposite reaction.

The Newton is used to measure a wide range of forces, including gravitational forces, frictional forces, and the forces involved in collisions and explosions.

Understanding the concept of force and its measurement is essential in studying and analyzing the physical world around us.

To know more about "Motion" refer here:

https://brainly.com/question/14662637#

#SPJ11

40 points for this question!​

Answers

Answer:

4mol because in equation it is written.

Why couldnt we test density of water and alcohol in their solid state

Answers

We cannot test the density of water and alcohol in their solid state because: they do not have a defined solid form.

Both water and alcohol have a unique property known as anomalous expansion, where they expand when cooled below a certain temperature, resulting in a decrease in density.

This is because the molecules in the liquid state are more tightly packed than they are in the solid state. As a result, water and alcohol both form less dense ice when they freeze.

Attempting to measure the density of water and alcohol in their solid state would be difficult as they do not have a defined shape and can have different densities based on how they freeze.

Water can form various types of ice, such as hexagonal ice or cubic ice, which can have different densities. Similarly, alcohol can also have different solid forms, resulting in different densities.

Therefore, to accurately measure the density of water and alcohol, it is necessary to measure them in their liquid state.

To know more about "Density" refer here:

https://brainly.com/question/17226757#

#SPJ11

Blank are blank , which contain the information for building blank?

Answers

Answer:

Chromosomes, DNA, proteins

Explanation:

Mitosis occurs in cells.

Answers

Answer:

Yes.

Explanation:

Mitosis occurs in somatic cells; this means that it takes place in all types of cells that are not involved in the production of gametes.

one problem with informal interviews to identify potential reinforcers is they are not is definiton of what?

Answers

One problem with informal interviews to identify potential reinforcers is they are not is definition of: systematic.

Informal interviews are not systematic in nature as they do not follow a structured or standardized approach to identify potential reinforcers.

In such interviews, the questions asked are generally open-ended, and there is no standardized set of questions or procedures that need to be followed.

This lack of structure can lead to a biased selection of reinforcers, where the interviewer's personal biases and preferences may influence the selection process.

Additionally, informal interviews may not provide a comprehensive understanding of all possible reinforcers that may be effective for an individual.

On the other hand, a systematic approach involves following a standardized set of procedures and questions to identify potential reinforcers, which can help to ensure that all possible reinforcers are identified and evaluated in a fair and unbiased manner.

This may involve conducting structured interviews, using checklists or rating scales, and involving multiple individuals in the selection process to reduce the impact of individual biases.

A systematic approach can help to increase the likelihood of identifying effective reinforcers and developing an effective behavior intervention plan.

To know more about "Systematic" refer here:

https://brainly.com/question/30764372#

#SPJ11

In three to five sentences, explain how the fossil record provides evidence for the idea of natural selection.

please help. my mother dint want me to learn about human evouloution and i need help for answerss on the test

Answers

The fossil record provides evidence for the idea of natural selection by showcasing the changes in species over time. It reveals the existence of transitional fossils, which are intermediate forms between ancestral species and their descendants. This demonstrates how species adapt to their environment through the process of natural selection, leading to the development of new traits and the eventual evolution of new species.

The fossil record provides evidence for the idea of natural selection by documenting changes in the traits of organisms over time. As new species evolve and old species become extinct, the fossil record preserves a record of the morphological, anatomical, and behavioral changes that have occurred in populations over time. By examining the patterns of these changes, scientists can infer the selective pressures that may have led to the evolution of these traits, such as changes in environmental conditions or the emergence of new predators or competitors. These observations provide strong evidence that natural selection is a major driver of evolutionary change in organisms.

Learn more about natural selection:

https://brainly.com/question/23929271

#SPJ11

A scientist studies cultures of four different types of cells undergoing cellular respiration and determines the average number of ATP molecules produced per cell, per molecule of glucose consumed. The data was recorded in the table.


Some of the cultures might be of a bacterium, which cannot undergo aerobic respiration. Which cells produce lactic acid as a byproduct of respiration?



A) Cells X and Z


B) Cells W and Y


C) Only Cell Y


D) Only Cell W

Answers

B) Cells W and Y cells produce lactic acid as a byproduct of respiration.

The scientist studied four different types of cells undergoing cellular respiration and determined the average number of ATP molecules produced per cell, per molecule of glucose consumed. Cells X and Z produced the highest amounts of ATP, with Cells W and Y producing slightly less.

It is likely that Cells W and Y are producing lactic acid as a byproduct of respiration, since aerobic respiration cannot occur in bacteria. Lactic acid is produced when the cells are unable to use oxygen for respiration and instead use anaerobic respiration, which produces lactic acid as a byproduct. Thus, the cells that produce lactic acid as a byproduct of respiration are Cells W and Y.

Therefore, correct option is B.

know more about lactic acid here

https://brainly.com/question/24976306#

#SPJ11

How are a 10-gram sample of solid gold and a 50-gram sample of solid gold different?

Answers

Answer: the different thing about eachother is that one will have more and weight more than the other

Explanation:

Baraka and his dark-skinned wife who had an albino father mother’s genotype:
father’s genotype:
offspring genotype %:
offspring phenotype %:

Answers

His fathers genotype is 75% genotype and 25% phenotype.

Based on the information given, we know that Baraka and his dark-skinned wife had a child with an albino father. To determine the possible genotypes and phenotypes of their offspring, we need to first consider the genotypes of the parents.

Assuming that the dark-skinned wife is homozygous for the dominant allele for skin color (let's call it "D") and the albino father is homozygous recessive for the same gene (dd), we can write out their genotypes as follows:

Mother: DD
Father: dd

When these two parents have children, each parent will randomly pass down one of their two alleles to their offspring. Using a Punnett square, we can determine the possible genotypes and phenotypes of their offspring:

|   | D  | D  |
|---|---|---|
| d | Dd | Dd |
| d | Dd | Dd |

From this Punnett square, we can see that all of their offspring will be heterozygous for skin color (Dd), meaning they will have one dominant allele for dark skin and one recessive allele for albinism.

To determine the percentage of offspring with each genotype and phenotype, we can count the number of squares in the Punnett square that correspond to each possibility:

- Genotypes:
 - DD: 0/4 or 0%
 - Dd: 4/4 or 100%
 - dd: 0/4 or 0%
- Phenotypes:
 - Dark-skinned: 3/4 or 75%
 - Albino: 1/4 or 25%

Therefore, we can say that all of Baraka and his wife's offspring will be carriers for albinism (heterozygous for the gene), and 75% of their offspring will have dark skin while 25% will be albino.

To learn more about gene, refer below:

https://brainly.com/question/8832859

#SPJ11

Which models the changes in the availability of food energy as energy moves through an ecosystem?

Answers

The model that represents the changes in the availability of food energy as energy moves through an ecosystem is called an "energy pyramid" or "trophic pyramid."

This pyramid illustrates the flow of energy through various trophic levels, from primary producers (such as plants) to primary consumers (herbivores), secondary consumers (carnivores), and so on.

As energy moves up the pyramid, only a fraction of it is transferred between levels, leading to a decrease in available energy at higher trophic levels.

The reason for the decrease in available energy can be explained by the second law of thermodynamics, which states that with each energy transfer, some energy is lost as heat.

Additionally, organisms use a significant portion of the energy they obtain for their own metabolic processes, growth, and reproduction. Therefore, only a fraction of the energy from one trophic level is transferred to the next trophic level, resulting in a decrease in available energy at higher levels.

This decrease in available energy at higher trophic levels has important implications for ecosystem dynamics. It limits the number of trophic levels that can be sustained in an ecosystem since there is not enough energy to support a large number of top-level predators.

The energy pyramid helps us understand the structure and functioning of ecosystems and highlights the importance of primary producers in capturing and converting energy from the environment.

It also emphasizes the interdependence of different trophic levels and the flow of energy through the food chain.

To learn more about energy, refer below:

https://brainly.com/question/1932868

#SPJ11

genotypes are the combitaion of alleles that determine traits

Answers

Answer:

True

Explanation:

Genotypes refer to the genetic makeup of an organism, which is determined by the combination of alleles inherited from its parents.

Alleles are different versions of the same gene, and they can either be dominant or recessive. The genotype of an individual determines the traits or characteristics it will display.

For example, if an individual has two dominant alleles for brown eyes (BB), it will have brown eyes, while an individual with one dominant and one recessive allele (Bb) will also have brown eyes, as the dominant allele masks the recessive one.

On the other hand, an individual with two recessive alleles (bb) will have blue eyes, as the recessive allele is expressed.

To know more about Genotypes, refer here:

https://brainly.com/question/12116830#

#SPJ11

What is the function of cyclin and cdk? what would happen if they become damaged?

Answers

The function of cyclin and CDK (Cyclin-Dependent Kinase) is to regulate the cell cycle progression.

Cyclin is a protein that binds to CDK, which is a kinase enzyme. When cyclin binds to CDK, it activates the CDK, which in turn phosphorylates target proteins involved in cell cycle progression. This ensures that the cell moves through the different stages of the cell cycle (G1, S, G2, and M phases) in an orderly manner.

If cyclin and CDK become damaged, it could lead to uncontrolled cell growth or cell cycle arrest. Damaged cyclin and CDK might not be able to function properly, which could result in the inability to phosphorylate target proteins. This could cause the cell to either become stuck in a certain stage of the cell cycle or move through the stages without proper regulation. Ultimately, this can lead to the formation of tumors, as cells could start to divide uncontrollably, or cell death if the cell cannot progress through the cell cycle.

To know more about cell cycle progression :

https://brainly.com/question/30579763

#SPJ11

List the steps of ecological succesion of an abandoned wheat dield

Answers

The ecological succession of an abandoned wheat field typically involves several stages, including pioneer species colonization, intermediate succession, and climax community formation.

Pioneer species colonization: The first organisms to colonize the abandoned wheat field are typically hardy, fast-growing plants such as grasses and weeds. These plants are adapted to harsh conditions such as poor soil quality and lack of water.

Intermediate succession: Over time, as the pioneer species die off and decompose, they create soil that is richer in nutrients. This allows for the growth of larger plants, such as shrubs and small trees. These plants may also attract pollinators and herbivores.

Climax community formation: Finally, after several decades, a stable, diverse ecosystem called a climax community may form. This community consists of a variety of plants and animals that are well-adapted to the environmental conditions of the area.

In the case of an abandoned wheat field, the climax community may consist of trees such as oak or pine, as well as various species of animals such as birds, insects, and mammals.


To know more about ecological succession, refer here:

https://brainly.com/question/12325701#

#SPJ11

In Drosophila, the autosomal recessive brown eye color mutation displays interactions with the X-linked recessive vermilion mutation. Flies homozygous for brown and hemizygous or homozygous for vermilion have white eyes. Predict the F1 and F2 progeny of crossing these true-breeding parents: brown females and vermilion males.

Answers

The F1 progeny of the cross will be brown-eyed females heterozygous for both mutations. The F2 progeny will have a 9:3:3:1 phenotypic ratio.

The genuine reproducing guardians are brown-peered toward females (bb) and vermilion-looked at guys (vY). The earthy colored eye variety transformation is autosomal passive, while the vermilion eye variety change is X-connected latent. Consequently, the brown-looked at females are homozygous for the earthy colored transformation (bb) and the vermilion-peered toward guys are hemizygous for the vermilion change (vY).

The cross between these guardians will create F1 descendants that are brown-looked at females that are heterozygous for both the brown and vermilion changes (Bb/vX). The F1 females will get an earthy colored allele from the mother and a wild-type allele from the dad, as well as a wild-type X chromosome from the mother and a vermilion X chromosome from the dad.

At the point when the F1 females are crossed with wild-type guys, the F2 offspring will have a 9:3:3:1 phenotypic proportion. This proportion results from the isolation of the alleles for the two qualities and their communications. In particular, 9/16 of the F2 descendants will have earthy colored eyes and wild-type (red) eyes, 3/16 will have white eyes, 3/16 will have earthy colored eyes and vermilion eyes, and 1/16 will have white eyes and vermilion eyes.

To learn more about F1 and F2 progeny, refer:

https://brainly.com/question/13721143

#SPJ1

About how much oxygen is produced by the amazon rainforest alone?.

Answers

The Amazon rainforest is estimated to produce about 20% of the world's oxygen, which is equivalent to approximately 6 to 9 billion tons of oxygen per year. This is because the rainforest's vegetation is able to photosynthesize and convert carbon dioxide into oxygen at high rates.

However, it is important to note that the oxygen produced by the rainforest is not solely used by humans, as it is also used by other organisms within the rainforest ecosystem.

Trees and other plants in the rainforest produce oxygen through the process of photosynthesis, which involves using sunlight, carbon dioxide, and water to produce oxygen and sugars.

The Amazon rainforest, which spans over 6.7 million square kilometers, produces about 20% of the world's oxygen. This amounts to approximately 20 billion metric tons of oxygen per year, which is critical for the survival of humans and other living organisms on Earth.

The Amazon rainforest also plays a crucial role in regulating the Earth's climate by absorbing and storing large amounts of carbon dioxide.

To know more about the Amazon rainforest refer here :

https://brainly.com/question/28290952#

#SPJ11

â Activity
Develop a presentation (e. G. Role-playing, dramatization and other forms of
multimedia) to show how an organism maintains homeostasis through the interaction
of the various organ system in the body.
Assesment
1. Explain the plant and animals differences in their reproduction process.
2. Explain Homeostasis in plants and animals. â

Answers

In animals, reproduction involves the fusion of male and female gametes to form a zygote and in plants, asexual reproduction occurs. Maintaining homeostasis is crucial for both animals and plants. Homeostasis refers to the ability of an organism to maintain a stable internal environment despite changes in the external environment.

The interaction of various organ systems in the body is essential for maintaining homeostasis.

In animals, reproduction involves the fusion of male and female gametes to form a zygote. This process is known as sexual reproduction. Animals have specialized reproductive organs that produce and transport gametes. In contrast, plants can reproduce sexually or asexually. In sexual reproduction, the male and female gametes fuse to form a zygote. In asexual reproduction, new individuals are formed from a single parent without the fusion of gametes.

In both animals and plants, maintaining homeostasis involves a range of physiological processes that regulate body temperature, water balance, and other internal conditions. In animals, the nervous and endocrine systems work together to maintain homeostasis. The nervous system sends signals to different organs and organ systems, while the endocrine system secretes hormones that regulate bodily functions. In plants, the balance between water uptake and loss, as well as the uptake of nutrients, is crucial for maintaining homeostasis.

To show how an organism maintains homeostasis through the interaction of various organ systems in the body, a multimedia presentation can be created. This presentation can include role-playing or dramatization to demonstrate how different organ systems work together. For instance, the presentation can show how the respiratory and circulatory systems work together to transport oxygen and carbon dioxide throughout the body. It can also demonstrate how the nervous system and endocrine system regulate bodily functions.

In conclusion, maintaining homeostasis is essential for the survival of both animals and plants. The interaction of various organ systems is crucial for maintaining homeostasis. Creating a multimedia presentation can be an effective way to demonstrate how an organism maintains homeostasis through the interaction of different organ systems.

To know more about homeostasis, refer to the link below:

https://brainly.com/question/3888340#

#SPJ11

In what step of protein synthesis is the code in mrna then used to make a protein?.

Answers

The process of protein synthesis involves the translation of the genetic information stored in mRNA into a sequence of amino acids, which make up a protein. This occurs in the ribosome, a large molecular complex composed of RNA and proteins.

During translation, the ribosome reads the sequence of nucleotides in the mRNA molecule and matches each three-letter codon with the corresponding amino acid. The amino acids are brought to the ribosome by transfer RNA (tRNA) molecules, which have an anticodon that recognizes and binds to the codon on the mRNA.

Once the ribosome has matched the codon with the correct amino acid, it forms a peptide bond between the amino acids, creating a growing chain of amino acids called a polypeptide. This process continues until the ribosome reaches a stop codon, which signals the end of protein synthesis.

In summary, the step of protein synthesis in which the code in mRNA is used to make a protein is called translation, which occurs in the ribosome. During translation, the ribosome matches the codons in mRNA with the appropriate amino acids and forms a polypeptide chain until it reaches a stop codon.

To know more about the protein synthesis refer here :

https://brainly.com/question/29763759#

#SPJ11

What are the four main functions of a skeleton? ANSWER PLEASE, WILL GIVE BRAINLIEST!!!!!!, ASAP ASAP PLSSSSSSSSSSSSSSSS

Answers

Answer:

support, production of blood cells, storage of ions, and endocrine regulation. 


The four main functions of a skeleton:
Support the bodyProtect vital organsHelp the body moveMake blood cells

Support

Your body is supported by your skeleton, which also holds your internal organs in place. The body would be floppy, like a jellyfish, without bones. Your muscles and organs have a framework to connect, thanks to your bones. The vertebral column (backbone) is what keeps your body upright.


Protect

Because bones are strong and hard, they can protect vital internal organs from harm. For example:

Your skull protects your brain.Your rib cage protects your heart and lungs.Your backbone protects your spinal cord.

Move

Bones are attached to muscles. A bone will move as a result of a muscle pulling on it. The skeleton is flexible at joints like your knee. The body may move because of how bones move around joints.


Making blood cells

Your body has some hollow bones, such as the long ones in your arms and legs. A soft tissue called bone marrow is located in the middle of these bones. Red and white blood cells are created in the bone marrow. White blood cells are used to fight infection, whereas red blood cells are used to transport oxygen throughout the body.

----------------------------------------------------------------------------------------------------------

Learn more

Learn more about the bone marrow here:

https://brainly.com/question/30765790

Learn about red blood cells, white blood cells and many more:

https://brainly.com/question/15491861

https://brainly.com/question/29000776

https://brainly.com/question/1594063

https://brainly.com/question/14615941

https://brainly.com/question/950535

https://brainly.com/question/31510917

----------------------------------------------------------------------------------------------------------

Fun Fact

2 to 3 million red blood cells are produced each second by the bone marrow!

The adult human body has 206 bones!

The femur is the longest and strongest bone of the human skeleton!

describe the general structure of multicellular fungi, including the type of cells they have, the cell wall composition, how they undergo vegetative growth, and the adaptive ways fungi obtains food and transports its nutrients throughout the body.

Answers

Multicellular fungi possess a  network of thread-like structures called hyphae, having eukaryotic cells  and a chitin-based cell wall. They exhibit vegetative growth through the extension and branching of these hyphae. Fungi have adaptive ways of obtaining food, including decomposing organic matter or forming symbiotic relationships, and transport nutrients throughout their network of hyphae.

The general structure of multicellular fungi involves a network of thread-like structures called hyphae, which collectively form the mycelium. These fungi have eukaryotic cells, characterized by the presence of a nucleus and membrane-bound organelles.

The cell wall composition in multicellular fungi primarily consists of chitin, a strong, flexible polysaccharide that provides support and protection. In some fungi, the cell walls may also contain glucans and proteins.

Vegetative growth in fungi occurs through the extension and branching of hyphae. This process, called apical growth, takes place at the tips of the hyphae, where the cell wall material is added, and the hyphae elongate and branch.

Fungi obtain food through their unique absorptive heterotrophic feeding strategy. They secrete extracellular enzymes that break down complex organic materials in their surroundings into simpler compounds, which are then absorbed into the hyphae. This process allows fungi to decompose dead organic matter, act as symbiotic partners, or even as parasites.

Transportation of nutrients in multicellular fungi is facilitated through the interconnected network of hyphae within the mycelium. Nutrients are absorbed by individual hyphae and distributed throughout the fungal body, supporting growth and reproduction.

For more such questions on hyphae, click on:

https://brainly.com/question/11922947

#SPJ11

ca2 is an intracellular messenger involved in which of these processes? choose one or more: triggering of embryonic development after fertilization nerve cell depolarization initiation of muscle contraction secretion of hormones release of neurotransmitters

Answers

Ca2 is an intracellular messenger involved in which of these processes initiation of muscle contraction therefore the correct option is C.

An intracellular messenger is a molecule that transmits information within a cell. It can be used to send signals from the extracellular environment to the inside of the cell or among components within the cell itself. Examples of intracellular messengers include cyclic-AMP, calcium ions, hormones, cytokines and growth factors.

These molecules bind to specific receptors on the target cells to elicit a response through a variety of pathways. The intracellular messenger then has an effect on gene expression, protein synthesis, enzyme activity and other biological processes.

Hence the correct option is C.

To know more about cyclic-AMP visit:

https://brainly.com/question/29975644

#SPJ4

At the superior end of the esophagus, the superior esophageal sphincter is a thickened ring of ______ muscle marking the area where the esophagus and the pharynx meet. Multiple choice question. Circular smooth longitudinal smooth longitudinal skeletal circular skeletal need help

Answers

At the superior end of the esophagus, the superior esophageal sphincter is a thickened ring of smooth muscle marking the area where the esophagus and the pharynx meet.

The superior esophageal sphincter is a thickened ring of smooth muscle that marks the area where the esophagus and the pharynx meet. It is formed by the circular smooth muscle that encircles the junction of the two organs and the longitudinal smooth muscle fibers that run down the length of the esophagus.

The sphincter serves a vital role in the digestion process, as it prevents food from entering the lungs and airways. The muscular ring is controlled by the autonomic nervous system, which is responsible for regulating the opening and closing of the sphincter.

This helps to ensure that food passes into the stomach and not into the lungs or airways. Additionally, the sphincter can help to regulate the speed of digestion, as it can contract and relax to regulate the speed of food passing through the esophagus.

Know more about esophagus here

https://brainly.com/question/22906056#

#SPJ11

In muscle cells, myosin molecules continue moving along actin molecules as long as.

Answers

In muscle cells, myosin molecules continue moving along actin molecules as long as (d) ATP is present and the intracellular Ca²⁺ concentration is high.

In muscle cells, myosin and actin filaments slide past each other during contraction, resulting in muscle shortening. This process is initiated by the release of calcium ions (Ca²⁺) from the sarcoplasmic reticulum, which binds to troponin and causes tropomyosin to move away from the myosin-binding sites on actin.

Once the binding sites are exposed, myosin heads bind to actin, forming cross-bridges. The hydrolysis of ATP provides the energy for the myosin heads to pull the actin filament, causing it to slide past the myosin filament. As long as ATP is present and the intracellular Ca²⁺  concentration is high, myosin continues to move along actin, resulting in sustained muscle contraction.

To know more about the muscle cells refer here :

https://brainly.com/question/30972407#

#SPJ11

Complete question :

In muscle cells, myosin molecules continue moving along actin molecules as long as

a. ATP is present and troponin is not bound to Ca²⁺.

b. ADP is present and tropomyosin is released from intracellular stores.

c. ADP is present and the intracellular acetylcholine level is high.

d. ATP is present and the intracellular Ca²⁺ concentration is high

Which of the following help the lungs to be such good gas exchange organs? (Circle 4 letters).
a) They are close to the heart.
b) They are surrounded by pleural membranes.
c) They have a large surface area.
d) The air in the alveoli and blood in the capillaries are separated by a 2 very thin layers of cells.
e) The blood flows more slowly in the lung capillaries as they are so narrow.
f) The haemoglobin carries lots of oxygen.
g) Breathing constantly changes the air in the alveoli.
h) Active transport increases the rate at which the two gases move.

Answers

These factors work together to make the lungs highly effective in their role of gas exchange, allowing for the efficient uptake of oxygen and removal of carbon dioxide from the body. Option (b) ,(c),(g) ang h are correct answer.

The lungs are excellent gas exchange organs due to their unique structure and the various mechanisms that aid in gas exchange. Four key factors that contribute to the effectiveness of the lungs in gas exchange are:

1. Large surface area: The lungs have a large surface area, which provides a greater area for gas exchange to occur.

2. Thin walls: The walls of the lungs are very thin, allowing for rapid diffusion of gases between the air in the lungs and the blood.

3. Moist environment: The lungs are moist, which helps to dissolve gases, making them easier to exchange.

4. Active transport: Active transport mechanisms help to increase the rate at which gases move across the walls of the lungs, ensuring efficient exchange of oxygen and carbon dioxide.

Therefore, Option (b) ,(c),(g) ang h are correct answer.

To learn more about : lungs

https://brainly.com/question/27010145

#SPJ11

PLS HELPP!! super easy


Which population growth pattern is most likely if a population is exposed to a new predator?
Responses


exponential

decreasing


slow growing


stable

Answers

Answer: B Decreasing

Explanation:

The most likely population growth pattern if a population is exposed to a new predator is decreasing. The predator will eat the prey, reducing the population size. The population may eventually reach a stable level if the predator population also reaches a stable level. However, if the predator population continues to grow, the prey population will continue to decline.

The other options are not as likely. An exponential growth pattern is only possible if the population is not limited by resources. A slow-growing pattern is possible if the population is limited by resources, but the predator is not a significant factor. A stable population is possible if it is in equilibrium with its environment, including the predator.

Answer: decreasing

Explanation: took the quiz and it was right. :)

The next day, the temperature decreased enough for both samples to experience a phase change. Actively read the prompt and the questions. Use your understanding about phase change too explain your answers to the questions.

Answers

A phase change occurs when a substance changes from one state of matter to another. In this case, the temperature decreased enough for both samples to experience a phase change.

The two samples could have gone from either a solid to a liquid (melting) or from a liquid to a solid (freezing). Depending on the material, the temperature at which they experience a phase change can differ. The lower the temperature, the more likely a sample will experience a phase change as it approaches its melting or freezing point.

The two samples could also have gone from a gas to a liquid (condensation) or from a liquid to a gas (evaporation). Condensation occurs when a gas becomes a liquid due to the cooling of the air, while evaporation occurs when a liquid becomes a gas due to the heating of the air.

Know more about temperature here

https://brainly.com/question/11464844#

#SPJ11

The basic characteristics that differentiate living from non-living things are called​

Answers

The basic characteristics that differentiate living from non-living things are called​ life, growth, and reproduction.

More about the differentiation between living and non-living things

All living things have senses, breathe, eat, grow, move, and reproduce. Non-living things do not consume food, grow, breathe, move, or reproduce. They have no senses.

Also, Non-living entities do not give birth. They do not mature, reproduce, age, or die. Non-living items can be both natural and artificial.

Learn more about living and non-living things here:

https://brainly.com/question/16328999

#SPJ1

What do animals as diverse as corals and monkeys have in common?.

Answers

Animals as diverse as corals and monkeys share several common traits. Firstly, they are all eukaryotic, multicellular organisms. They also belong to the kingdom Animalia and share a common ancestor.

Additionally, they all have specialized cells, tissues, and organs that carry out specific functions in their bodies. For instance, they have a nervous system that helps them respond to their environment and carry out complex behaviors.

They also have specialized digestive, respiratory, and circulatory systems that help them obtain nutrients, oxygen, and remove waste. Furthermore, they all reproduce sexually, which involves the fusion of gametes (sperm and egg cells) to form a zygote.

Despite the differences in their morphology, behavior, and habitat, all animals share these fundamental characteristics.

To know more about the kingdom Animalia refer here :

https://brainly.com/question/9031447#

#SPJ11  

Other Questions
Discuss how you will use the "8-Step process to critical thinking" in your personal and professional life. Provide examples to support your answers. Lin's smart phone was fully charged when she started school at 8:00 a. M. At 9:20 a. M. , it was 90%charged, and at noon, it was 72% charged. 1. When do you think her battery will die?2. Is battery life a function of time? If yes, is it a linear function? Explain your reasoning. what's equivalent to x^2-4x-l2 Tabitha bought a new SUV and obtained a loan for $29,000. The annual interestrate is 4. 3% for 7 years. If Tabitha takes the loan for 5 years instead of 7, she willsave. 5% on the interest rate. How much less will Tabitha pay for her SUV if shetakes the loan for 5 years? * Wesley makes spherical fish tanks with a diameter of 30cm. Kate requests a smaller tank with half the volume of the tank that Wesley usually makes. Kate tried to figure out the approximate diameter of the smaller tank, but she made a mistake. In which step did Kate first make her mistake? _______ are abandoned properties that are contaminated with hazardous pollution and are seen as sites of potential revitalization Prove that 5 to the power of 7 plus 5 to the power of 6 is divisible by 6 Vivian was working on a sports website. She wanted to create a football with vibrant colors that would revolve in a corner of the website. What can Vivian use to design this football? You are shopping for a King & Queen size mattress, each of which are shaped like a rectangle. The Queen is 16 inches longer than it is wide. The King is 20 inches wider than the Queen, but has the same length. The area of the King-sized mattress is 1,600 in larger than the Queen. Find the Area of both mattresses How do rizalista groups view rizal and other national heroes? At first, the narrator looks on the Civil War with distrust, as if it were some "playaffair. " What happens to change his mind about the war, and encourage him toenlist? Cite textual evidence to support your answer. (The Red Badge of Courage) 3. the sketch shows three adjacent angles. please write an equation that can beused to determine the value of y?2836please help Five students are going to volunteer at a food pantry tomorrow. Each student will be assigned to either the morning shift or the afternoon shift, but not both. Each shift must be covered by at least two of the five students. How many different ways can the five students be assigned?I'll put branliest to first person a pollen grain is placed in water state and explain the direction in which it moves You're at a clothing store that dyes your clothes while you wait. The store offers 4 different articles of clothing and 3 colors.If you randomly choose the article of clothing and the color, which of these diagrams can be used to find all of the possible outcomes? Which of the following statements best reflects the role of the nonspecific immune system?O It is designed as a first line of defense against pathogens.OIt is designed to dispose of pathogens after they have been found.OIt is designed to attack pathogens not found by the specific immune system.O It is designed to deal only with pathogens that are not a serious threat to the body. answer pls my state test is cominggggg After listening to the first twelve and a half minutes of Reagan's speech. Do you feel like the United States had a responsibility to Germany to fight for an end to the cold war and the destruction of the Berlin Wall? Why or why not? Provide at least two reasons to support your answer. when completing a nutritional assessment of a patient who is admitted for a gi disorder, the nurse notes a recent history of dietary intake. this is based on the knowledge that a portion of digested waste products can remain in the rectum for how many days after a meal is digested? The feeding tube inserted in the mans nose is necessary for him to survive. It delivers food to him each day, but his mass is never changing. The nurses who take care of him have to change diapers that contain poop and pee multiple times each day. Use your model of chemical reactions in living things to explain what is going on here. Your answer: