The electrical stimulation of the cardiac muscle cells is called depolarization; the mechanical contraction is called Systole.
During systole, the 2 ventricles broaden strain and eject blood into the pulmonary artery and aorta. At this time the atrioventricular valves are closed and the semilunar valves are open. The semilunar valves are closed and the atrioventriular valves are open at some point of diastole. The cardiac cycle is basically cut up into phases, systole (the contraction phase) and diastole (the rest phase). Each of those is then similarly divided into an atrial and ventricular component. Systole happens while the coronary heart contracts to pump blood out, and diastole happens while the coronary heart relaxes after contraction.
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help please i need a sentence of this
Answer:
one threat is pullution
Explanation:
pollution will make the water dirrty and we can no longer use that water
A zygote is the same as a gamete, they are both haploid cells *
True
False
Answer:
False
Explanation:
The zygote is endowed with genes from two parents, and thus it is diploid (carrying two sets of chromosomes). The joining of haploid gametes to produce a diploid zygote is a common feature in the sexual reproduction of all organisms except bacteria.
Gametes are haploid cells, and each cell carries only one copy of each chromosome. These reproductive cells are produced through a type of cell division called meiosis.
What is the process of passing genes?
Transcription and translation are the two main procedures. Gene expression is the result of transcription and translation working together.
The information contained in a gene's DNA is transferred to an analogous molecule called RNA (ribonucleic acid) in the cell nucleus during transcription. However, when people discuss the passing on of genes, they typically do not refer to the passing on of genes during cell division from one cell to another.
Instead, they typically refer to genes that are passed on from parents to their offspring. Heredity or "inherited genes" refer to this. An egg from the mother and sperm from the father combine to make a fetus. Each chromosome in the egg and sperm makes up one half of the complete set. The embryo is created from the sperm and egg.
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What are 3 ways a mutation can occur in the DNA?
The three ways a mutation can occur in the DNA are, (1). Insertion
(2). Deletion (3). Translocation.
1. Insertion: The DNA strand receives more DNA nucleotides.
2. Deletion: The DNA sequence is altered as a result of the deletion of DNA nucleotides.
3. Translocation: The exchange of chromosomal segments.
Point mutations, or defects introduced in a single spot on a DNA molecule, include substitutions, insertions, and deletions. Sometimes errors can be significantly larger. Errors that relocate entire regions of a DNA molecule are known as chromosomal mutations, also known as gross or gene-level mutations. When cells divide and make duplicates of themselves, changes to the DNA sequence are called gene or genetic mutations. The human body is programmed with instructions from the DNA.
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Answer ASAP Please!!!!!!!!
In ancient Greece, Aristotle developed a system of classification which was used for the next 2000 years to describe relationships between living things. Which of the following questions would be most difficult to answer based on Aristotle's classification of living things?
1. Are cows more complex than oak trees?
2. Are tomato plants higher or lower than snails?
3. Which species shows less complexity, a cat, or a dog?
4. Which organism is lower, a squirrel or a lobster?
The most difficult to classify by the method of Aristotle is; which species shows less complexity, a cat, or a dog?. Option 3
What is the classification of life?We know that the classification of life is none of the key areas that we have in biology. There are so many living things that are in existence that we find it quite bogus to find out a way or a method that we can be able to use in the putting of all the living things into the groups that may fit them all.
There have been so many attempts at the classification of the living things and most of the attempts that we have have come from the leading scientists of the day and they are all geared towards the process of the understanding of life.
The first of these methods was put out by Aristotle but thye current system of the classification of the living things have been made by Linnaeus.
In the classification of Aristotle, living in things were classified based on where they live and also based on whether or not they are able to move.
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Answer:
The correct answer is Which species shows less complexity, a cat or a dog?
Explanation:
That is because according to him, land animals were more complex than sea animals, and plants were less complex than animals, so all other are easy to decide on their complexity. Cats and dogs however are difficult to determine who is more complex.
deep in your digestive system, next to your small intestine, you have a small organ called an appendix. your appendix is a (mostly) useless organ and does not help your digestion.what kind of structure is it and how do you know
Answer: The appendix is a vestigial organ located at the lower right side of the abdomen. Its structure is like a thin tube of about 2-20cm. This can be known through its location at the lower end of the cecum which is a pouch-like structure in the large intestine.
Explanation: The appendix is located in the region of the body where the small intestine connects to the large intestine. It's a short tube that's roughly an inch and a half in diameter. In most people, the appendix is located in the right bottom quadrant of the abdomen.
It is not known what role the appendix plays in the body. There is a school of thought that suggests the appendix works as a repository for healthy bacteria, "rebooting" the digestive system after an illness that causes diarrhea. Some medical professionals are of the opinion that the appendix is nothing more than an evolutionary relic that serves no use. There are no obvious negative health effects associated with surgical removal of the appendix.
Which statement is true about the part of the electromagnetic spectrum that is divided into seven ranges of wavelengths?
A. It is one of two parts visible to the human eye.
B. It is one of three parts visible to the human eye.
C. It cannot be seen by the human eye unless it rains.
D. It is the only part visible to the human eye.
Answer:
d
Explanation:
the only part visable to the human eye is visable light
Scientific studies have proved that properly placed dental sealants are _____ effective in protecting development of cavities in sealed tooth surfaces.
Scientific studies have proved that properly placed dental sealants are highly effective in protecting the development of cavities in sealed tooth surfaces.
A dental sealant is a thin plastic coating that is applied to the chewing surface of molars, premolars, and any deep grooves (called pits and fissures) of teeth. The sealant acts as a barrier, protecting the teeth from decay-causing bacteria.
The process of applying dental sealants is simple and painless. The tooth surface is first cleaned, and then the sealant is applied. The sealant hardens and bonds directly to the enamel of the tooth, creating a protective shield. This shield acts like a wall, preventing tooth decay-causing bacteria from entering the deep grooves of the teeth.
Studies have shown that dental sealants reduce the risk of cavities by 82 percent in sealed tooth surfaces. This is due to the fact that the sealant prevents bacteria from entering the deep grooves of the teeth and attacking the enamel. The sealant also helps prevent food particles from becoming trapped in the grooves, which further reduces the risk of tooth decay.
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what is the similar between an estuary zone and intertidal zone
An estuary zone and an intertidal zone are both areas along the coast where freshwater and seawater mix. Both are affected by the tidal movements of the ocean and support a wide variety of plants and animals adapted to living in these environments. Both estuaries and intertidal zones are important ecosystems that provide habitat for many species and support economic activities such as fishing and tourism. They are also vulnerable to pollution and other human impacts and are often protected and preserved
If long-term higher global temperatures continue to rise on Earth which aspect of the water cycle will most likely occur more rapidly?
Answer:
evaporation
Explanation:
because the more heat that hits the water the more it evaporates
If long term higher global temperature continue to rise on Earth which aspect of the water cycle will most likely occur more rapidly
The correct answer is :
It affects the evaporation and precipitation.
What is water cycle?
It is the cycle process by which water circulates between the earth's oceans, atmosphere, and land. It involves precipitation as rain and snow, drainage in streams and rivers.This precipitate water returns to atmospheric by evaporation.What affects the parts of water cycle?
Change in climate affects the parts of the water cycle to speed up if the temperature increases.Than it leads to increase in the rate of evaporation. Increase in evaporation cause more precipitation.So, evaporation is the correct answer.
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1)Sam needs 10 kg of lemons to make lemonade.If each of the bag weighs 1000 g how many bags does he need?
2)How many 250 g bags of grapes are needed to make 5 kg?
Answer:
1) 10
2) 1000g
Explanation:
1000g =1kg
total bags needed = 10
5000g = 5kg
5000g /5
total 250 bags of grapes are needed = 1000g
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Each of the bird's beaks was adapted to the type of ...
A. winds the island had
B. food that it ate
C. predators it had to hide from
Answer:
b
Explanation:
Please Help! I Need the answers ASAP
Answer:
a. current
Explanation:
hope it helps!
:3
Plantas de la herbolaria mexicana que usamos para calmar problemas digestivos??? AYUDAAA ES PA HOY ANTES DE LAS 10pm
Answer:
Epazote
Explanation:
Epazote is the Mexican herb that can be use to treat digestive problems. The health benefits of epazote include reduce flatulence, eliminate parasites that are present in the digestive system and in the body, improve metabolism, protect our immune system, causes weight loss, heal the wounds, and reduce menstrual discomfort. This herb is very effective in preventing digestive disorders.
Identify: What is the name for the division of the nervous system that handles involuntary actions and processes of the body?
*15 Points* Please don't answer just for the points, actually answer the question.
The autonomic nervous system regulates involuntary and unconscious actions like breathing, digestion, and internal organ function. The system consists of two complementary parts; the sympathetic andparasympathetic systems.
what are the agents of pollination?please answer
Answer:
Explanation:
Pollinators range from physical agents, especially the wind (wind pollination is called anemophily), or biotic agents such as insects, birds, bats and other animals (pollination by insects is called entomophily, by birds ornithophily, by bats chiropterophily).
Answer:
hope it helps..stay safe
Explanation:
Pollinators range from physical agents, especially the wind (wind pollination is called anemophily), or biotic agents such as insects, birds, bats and other animals
What is the ratio of purple flowers to white flowers 3 1?
The "masked" (recessive) genes from the F1 generation were allowed to mate, but only once, allowing the other three times to emerge with purple flowers. In generation F2, this led to a 3:1 ratio of purple: white flowers.
A ratio is a mathematical relationship between two numbers that, by definition, illustrates how frequently something has occurred or been present.
669 purple flowers equals
221 white flowers equals
The following procedures should be followed in order to calculate the ratio: Decide which values need to be expressed as a ratio. Make the formula, for instance, by dividing the ratio of two integers. If the percentage is required, multiply the result by 100 to make the computation simpler.
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The complete question is as follows
There are 669 purple flowers and 221 white flowers. What is the ratio of purple flowers to white flowers?
Can a female calico get pregnant?
No, calico cats can't breed, so they can't have children.
The calico cat is one of the most beautiful creatures in the world. Characterized by its unique fur, it is loved not only by cat lovers, but also by non-cat lovers.
Calico cats cannot actually breed due to their unique genetic makeup (and the fact that male calico cats are born sterile). The XXY configuration can lead to Klinefelter's Syndrome, a health problem we'll discuss later. These cats are too sterile and cannot be used to lineage other calico cats. Calico cats are believed to bring good luck and wealth to homes and families. It's also considered a little magical because it's three colors.
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12. The structures labeled A, B, C, and D in the
diagram below represent
A-
(1) organelles
(2) organs
(3) nuclei
(4) mitochondria
BUD
B-
-C-
D-
(2
16. C
(1
17. N
(
Nuclei are labeled C in the diagram, as they are the larger structures and typically contain the genetic material (DNA) of the organism, while mitochondria are labeled D and are smaller organelles responsible for producing energy in the cell.
Does massage loosen tight muscles?
Yes, massage can lossen tight muscle.
In general ,Massage will help in relaxation of tight muscles, by separating and loosening muscles fiber. Muscles that are elongated and stretched after message can releases tension which helps in easy movement.
Hence, the most common types of massage that should be advised for relieving tight muscles comprises of deep tissue massage and remedial massage. Out of which Deep tissue massage are used for relieving tight muscle by treating the inner most or deeper layers of muscle and fascia. Some times Stretching and applying hot and cold pack in alternating manner can also helps in loosening of tight muscle.
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What mutation did Lucy have?
Due to Lucy's high levels of deoxyadenosine in her blood, I was able to discover she had ADA-SCID. Her proteins were produced improperly and were shorter due to the stop codon mutation.
Since the gene mutation has no impact on the active site, there is no issue. Lucy's seizures were found to be caused by a mutation in the STXBP1 gene, which also causes the rare neurological disorder STXBP1 encephalopathy, following the completion of a genetic test known as an epilepsy panel.
I believe that the tRNA error is what is causing Lucy's ADA enzyme to malfunction. Lucy's 1500 base pair length is in line with the chart's usual range for gene length. However, Lucy only has half of that at 283.
The complete question is:
Lucy was admitted to CHOP. Because Lucy did not have an infection or an injury to her brain that was causing her seizures. What mutation did Lucy have?
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what products are always made when any carbon-based fuel is burened in the presence of oxygen
Answer:
carbon dioxide and water.
Answer: carbon dioxide and water
Explanation: It is generally known that when carbon containing compounds burn in air CO2 and H2O are produced
blank is the study of how organisms interact with their environment?
FILL IN THE BLANK PLEAS HELP ME!!!!!!!!!!!!!!!!!!!!!
Answer: Ecology is the study of how organisms interact with their environment.
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HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
Answer:
Chemical Weathering
Explanation:
Achondroplasia (dwarfism) is caused by a dominant gene. A woman and a man both with dwarfism marry. If homozygous achondroplasia results in the death of embryos, then the expected ratio of normal to affected children will be
The expected ratio of normal to affected children will depend on the genetic background of the parents. If both parents have achondroplasia, which is a dominant gene, then each of their children has a 50% chance of inheriting the condition.
In this case, the expected ratio of normal to affected children would be 1:1. However, if one parent is heterozygous (carries one copy of the gene) and the other is homozygous (carries two copies of the gene), then the expected ratio of normal to affected children would be 3:1.
This is because the heterozygous parent has a 50% chance of passing on the achondroplasia gene and the homozygous parent has a 100% chance of passing on the achondroplasia gene.
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20 POINTS,
IS water a non-renewable or renewable source?
Answer:
renewable sources.
Explanation:
Answer:
renewable
Explanation:
What is the genotypic ratio of 50%?
A 1:1 phenotypic ratio occurs when two possible genotypes have a 50% chance of developing when organisms are crossed. The chances of getting the ratio to 50% depicts both the recessive as well the dominant traits all together.
Phenotype, a person's or a species' observable traits and attributes, is influenced by genotype. Depending on the trait, genetics can impact phenotypic to varying degrees. For instance, genotype alone determines the colour of a pea plant's petals. Depending on the alleles present, the pea plant's petals can be either purple or white. But the genotype has a very small impact on some traits. These traits are occasionally referred to as complex traits since they are impacted by a variety of variables, including environmental and epigenetic influences. Due to the influence of environment and growing conditions, even individuals with the same genotype do not all look or behave the same.
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Teo proteins are formed from the same amino acids but have different functions suggest two factors which make from these proteins different
Answer:
Different sequence of amino acid and sequence of DNA.
Explanation:
All proteins are made of same amino acids but differ in their function because of different sequence of amino acids. The presence of different sequence is dictated by the nucleotide sequence of their genes. This different sequence of amino acid and sequence of DNA are the factors that are responsible for the different function of different proteins so we can conclude that sequence of amino acid and sequence of DNA are responsible for difference in function of proteins.
Every deliberate action you make, such as pedaling a bike, walking, scratching, or smelling a flower, involves neurons in the __________ nervous system.\
Every deliberate action you make, such as pedaling a bike, walking, scratching, or smelling a flower, involves neurons in the Somatic nervous system..
So , The correct option is B
The somatic nervous system is one of the peripheral nervous system's divisions. Only the skeletal muscles get motor signals from the central nervous system via the somatic nervous system.
The reactions that are consciously controlled are generated by the skeletal muscles. As a result, the somatic nervous system governs the body's voluntary motions.
Voluntary motions of skeletal muscles, such as walking, sniffing a flower, cycling, and so on, are therefore governed by neurons of somatic division.
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Full Question ;
Every deliberate action you make, such as pedaling a bike, walking, scratching, or smelling a flower, involves neurons in the ________ nervous system.
a) sympathetic
b) somatic
c) parasympathetic
d) autonomic
in your own words, what is the definition for Plasmalemma?
Answer:
This is a plasmatic membrane (cell membrane) that bounds a cell.
Answer: a very thin membrane, composed of lipids and protein, that surrounds the cytoplasm of a cell and controls the passage of substances into and out of the cell.
Explanation: