Answer:
Specialized cells because they preform a specific function
Which of the following is a tool that is best used to measure the oxygen in water?
Answer:
DO is measured using a dissolved oxygen meter (or DO meter). The best method is to take the measurement in the field at the same time each day, because DO concentrations can vary throughout a 24 hour period.
Explanation:
Hypothesis (Pls answer with IF and THEN)
How does fossil evidence determine the relationships of whale ancestors and their descendants?
Similarities in the bone structure, the genetic composition, chemistry of the teeth etc
Explanation;Fossils are the trace or remains of an organism that lived long ago. Fossils provides a lot of evidence concerning the ancestors of whales.Fossil evidence shows that a land mammal the lived between 50 million and 70 million years ago. It is thought that whales evolved from these ocean-dwelling mammals.Whales Descended From Tiny Deer-like Ancestors. Scientists found that whales are mammals whose ancestors walked on land.The structures of the bones and chemistry of the teeth of a close relatives of whales such as Indohyus,indicates that they spent most of their time in water.Answer: If the fossil evidence determine the relationships of whale ancestors and their descendants, then they can see what are the remain of the fossils are the trace or remains of an organism that lived long ago.
one atom has 13 protons and another atom has 10 protons are they the same element
Heat Transfer discussion based question
Your response needs to be AT LEAST 2 paragraphs.
DISCUSSION QUESTION: How is thermal energy transferred?
Answer: Thermal energy flows from a warmer material to a cooler material. When thermal energy is transferred to a material, the motion of its particles speeds up and its temperature increases. There are three ways heat is transferred into and through the atmosphere: Radiation, conduction and convection.
Radiation is when energy, in the form of electromagnetic radiation, is emitted by a heated surface in all directions and travels directly to its point of absorption at the speed of light; thermal radiation does not require an intervening medium to carry it. Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules. Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it.
An organelle found in most eukaryotic cells described as cellular power plants because their primary function is to convert materials into energy in the form of atp
Answer:
This kind of cell does not have a large central vacuole. ... An organelle found in most eukaryotic cells described as "cellular power plants", because their primary function is to convert organic materials into energy in the form of ATP. Nucleolus. This organelle, found in the nucleus, produces ribosomes.
:
Darwin argues that sexual selection is the reason for males in many animal species to differ from females in mental disposition and that, therefore...
a. Sexual selection does not apply to the human species, since equality, not difference, is a human ideal
b. Sexual selection ought to be made illegal
c. Sexual selection is also likely to be the reason for what he considers inherent mental differences between males and females in the human species
Answer:
A sexual selection does not apply to the human species,since equality, not difference,is a human ideal
Every hour we shed 1.5 million skin cells. What do these skin cells become and what
eats them?
Answer:
the protein known as keratin, the main component of the epidermis. Melanocytes, which produce your skin pigment, known as melanin. Langerhans cells, which prevent things from getting into your skin.
Why is the cell membrane is considered a fluid mosaic?
Answer:
Fluid mosaic is what people consider the cell membrane to be. This is because of how the cell membrane works, its made up of various different molecules floating all over the membrane. The molecules are going in a fluid flow. For example ice floating in an ocean. Or oil floating on water.
Multiple Choice Which option refutes Jim's argument in the following scenario?
Jim is a cattle farmer who prides himself on his ability to raise healthy stock. He believes that all cattle should be raised to be hearty, heavy, and visually appealing in order to make the most financial gain from the sale.
A Cattle must be healthy in order to function.
B Lower weight cattle sell for less at market.
C Breeders determine what traits are desirable.
D. Desirable traits vary by the buyer's role.
Answer:
Desirable traits vary by the buyer’s role.
Explanation:
What term is used to describe the state in which molecules are evenly distributed in the available space?
Answer:
equilibrium
Explanation:
The term that is used to describe the state in which molecules are evenly distributed in the available space is dynamic equilibrium.
The molecules of a substance refers to a group of two or more atoms of the substance held together b chemical bonds.
Molecules of solids are fixed about a particular point except they are dissolved in solution. Molecules of liquids and gases, however, move about randomly.
When the molecules of a particular substance are more to one side between two adjacent points in a space, a gradient is created. However, when the molecules of the substance are uniformly distributed in a space, they are said to be in dynamic equilibrium.
More on the movement of molecules can be found here: https://brainly.com/question/2284581
what are the factors that make the planet habitable
Answer:
Safe distance (like the earth) from the sun, starts surrounding the planet have to be stable, should not have a very low mass.
It must rotate on its axis and revolve.
It should have a molten core.
It should hold an atmosphere.
The planet (earth ) is habitable based on these factors :
Temperature Right chemical ( like water and oxygen )protection from solar radiationdistance from the sunThe planet ( earth ) is habitable because of some certain factors that cannot be found on other planets . such as The temperature of the planet ( earth ) is on an average of 58.62°F. which is the right temperature for human and plant habitation.
The presence of freshwater and oxygen in the atmosphere makes the planet habitable and also other necessary chemicals
The magnetic field of the Earth protects the Earth from high levels of solar radiation and this makes the earth safe and habitable for humans.
The distance of the earth from the sun also makes it possible for life to exist on planet earth
Hence we can conclude that the factors that make the planet habitable are :Temperature , Right chemical ( like water and oxygen ), protection from solar radiation, distance from the sun
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Sam can see an organelle in a plant cell under the microscope that is green. Which organelle is it most likely?
A. vacuole
B. nucleus
C. cytoplasm
D. chloroplast
Relief is also known as terrain
True
False
Answer:
false
Explanation:
hope this helps:))
What is the percentage of the parent isotope remaining after 1 Half Life, assuming you start with 100% of a sample.
Why was modern classification invented?
O Traditional classification could not classify all living things.
O Scientists realized related organisms do not share similar characteristics
O Scientists understood that species share a common ancestor
O Modern classification is faster and easier to use.
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Answer:
Scientists understood that species share a common ancestor.
Explanation: i just took a quiz and got it right
Describe what is happening with light and matter in photosystem II and Photosystem I.
Answer:
Photosystem I is an integral membrane protein complex that uses light energy to catalyze the transfer of electrons across the thylakoid membrane from plastocyanin to ferredoxin. Ultimately, the electrons that are transferred by Photosystem I are used to produce the high energy carrier NADPH.
It captures photons and uses the energy to extract electrons from water molecules. These electrons are used in several ways. First, when the electrons are removed, the water molecule is broken into oxygen gas, which bubbles away, and hydrogen ions, which are used to power ATP synthesis.
please help. i’m literally going to fail biology
Answer: Cell biology encompasses both prokaryotic and eukaryotic cells and can be divided into many sub-topics which may include the study of cell metabolism, cell communication, cell cycle, biochemistry, and cell composition. Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning its DNA is surrounded by a membrane), and has other membrane-bound organelles that allow for compartmentalization of functions. The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. ... The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles. The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. ... The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles.
Explanation:
the parts of endoplasmic reticulum that do not have ribosomes are called
The parts of endoplasmic reticulum that do not have ribosomes are called Smooth Endoplasmic Reticulum(SER).
The___ releases enzymes that digest proteins.
A. pancreas
B. liver
C. gallbladder
Answer:
A. Pancreas
Explanation:
Answer:
Pancreas
Explanation:
The pancreas contains exocrine glands that produce enzymes important to digestion. These enzymes include trypsin and chymotrypsin to digest proteins; amylase for the digestion of carbohydrates; and lipase to break down fats.
TRUE OR FALSE QUESTION
The Florida Keys are made up of a chain of islands near the tip of the peninsula.
Answer:
true
Explanation:
Answer:
TRUE
Thats what the florida keys are a chain of islannds
Sara and michael tested electromagnets to see the size of wire
Answer:
Please u didn't finish your question. Please re-write ur question so that people who know the answer to ur question answer it. Hope u don't find it ..... to report it.
✨Thanks!!!☺✨
Which of the following ways are leftover neurotransmitters cleaned up if they
have not been accepted by the postsynaptic neuron?
Pick 2
the neurotransmitters are broken down in the synapse
the postsynaptic neuron absorbs the neurotransmitters
The presynaptic neuron absorbs the neurotransmitters
the neurotransmitters are built up to create a new neuron
Answer:
The correct answer is -
the neurotransmitters are broken down in the synapse
The presynaptic neuron absorbs the neurotransmitters
Explanation:
The termination of the neurotransmitters is essential as if they can cause harm by continuing the stimulus effect on the muscles or cells. To clean up these neurotransmitters there are two ways- Degradation of neurotransmitters with the help of enzymes in the synapses or synaptic cleft and the presynaptic neurons absorbs or suck up neurotransmitters. The neuron (presynaptic neuron) is that releases the neurotransmitter like dopamine, serotonin, is the one that re-uptake it.
This reuptake is done by transporter proteins that are are symporters in nature as these proteins pump neurotransmitters as well as ions back into the neuron.
Which is abiotic?
tree sap
O insect
O sunlight
O tree stump
Answer:
Sunlight is abiotic. Abiotic is a non living thing
Sunlight is an abiotic factor. Therefore, the correct statement is option C.
What do abiotic elements consist of?Sunlight is an inanimate element of the environment, making it an abiotic one. Insects and tree sap are both living things, and a tree stump is a decomposing piece of the environment that was once alive.
Abiotic elements are the ecosystem's non-living parts. They include natural elements including sunshine, water, air, temperature, soil, and minerals as well as physical and chemical elements. In contrast, biotic factors include live species, including plants, animals, fungi, and bacteria.
Sunlight is a crucial abiotic component of ecosystems because it fuels photosynthesis and influences the development and behavior of living things. It also affects weather patterns and climate, which may have a big influence on ecosystems.
Therefore, sunlight is an abiotic factor including natural elements including sunshine, water, air, temperature, soil, and minerals as well as physical and chemical elements.
Learn more about the abiotic elements here:
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Which explains how the formation of the East African Rift Valley formed?
Answer:
c
Explanation:
because of the arrows are pointing the direction of witch it went to make the rift
Which of the following limits the size of a food web?
No answer choices but I might think you're talking about
EnergySomeone please help me out
1.does convergent boundaries create or destroy land
2.does divergent boundaries create or destroy land
3.does transform boundaries create or destroy land
Answer:
1. Yes
2. No
3.No
Which statement best explains why BaCl2 is an ionic compound?
O A. BaCl, has a net charge of -2.
O B. The neutral atom Ba gains 2 electrons.
O C. BaCl, has a net charge of +2.
OD. The neutral atom Cl gains 1 electron.
Answer:
D. The neutral atom Cl gains 1 electron.
Explanation:
Ionic bond:
It is the bond which is formed by the transfer of electron from one atom to the atom of another element.
Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.
For example:
Barium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.89. There is large difference is present. That's why two valence electron from barium is transfer to the chlorine. Barium becomes positive and chlorine becomes negative ion. Both atoms are bonded together electrostatic attraction occur between anion and cations. There are two valence electron lost by barium while chlorine required one electron to complete the octet thus two chlorine atoms are bonded with one barium atom. Each atom of chlorine carry -1 charge while one barium atom have +2 charge.
Often, the shape or structure of a cell is related to its_________
Answer:
Cells are limited by their surface area to volume ratio and they come in many different shapes. A cell's function is determined, in part, by its shape.
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Answer:
Function
Explanation:
The shape of the cell, the organelles within it as well as how many of those organelles are present play a huge role in the cells function.
For example, muscles cells will have lots of mitochondria that are used for ATP production, needed in movement.
Lung cells will have ridges or groves in them that increase the cells surface area that make them much more effective at the diffusion of oxygen and carbon dioxide when breathing.
Cells can detect changes in their environment and signals from other cells using
enzymes
DNA
receptor protiens
membrane phospholipids
Choose the term that matches the definition:
These elements are found on the left side of the periodic table and are characterized by being shiny, good conductors of heat and electricity, and are often malleable.
AChoice A
Non-Metals
BChoice B
Radioactive
CChoice C
Metals
DChoice D
Metalloids
Answer: Metals
Explanation:
since they have lustre, good conductors of heat and electricity and are often malleable.
Answer:
c
Explanation: