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3 years ago

8

many organisms depend on land as a food source. seasons can affect the amount of food that is available to these organisms. how

could a long, cold winter most likely affect a population of deer

1 answer:

Amanda [17]3 years ago

6 0

If the weather gets too cold, the plants the deer eat can die causing the deer to starve to death and lower the population of the species.

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What are the four important conditions of a respiratory surface

Ksivusya [100]

The four important characteristics of respiratory surface are:

1. Thin walls

2. Moisture

3. Large surface area

4. Blood supply

Respiratory system or respiratory tract is divided into upper and lower tract. Upper respiratory tract includes nose and its cavities, sinuses, pharynx and the part of the larynx. Lower respiratory tract consists of the trachea, bronchi, bronchioles and the alveoli.

Alveoli are the ends of the respiratory tract the smallest units in it. Alveoli are small folded air sacs that are branching off from alveolar ducts and providing an extremely large surface area for the gas exchange. Gas exchange occurs thanks to small blood vessels – capillaries that surround alveoli and it occurs via the process of diffusion.

So, respiratory surface is thin membrane also known as the blood–air barrier that consists of the alveolar epithelial cells, their basement membranes and the endothelial cells of the alveolar capillaries.

6 0

3 years ago

if a cell increases the activity of its actin severing proteins, will it lead in the short term to more or less actin polymer ma

marta [7]

More polymer will form if the concentration of free actin monomers is higher than the Cc at both the plus and minus ends.

Less polymer will form if the concentration of free actin monomers is lower than the Cc at both the plus and minus ends.

Actin polymerization encourages FAK and Src to activate small G proteins by signalling to GEFs and GTPases (e.g., Rho and Rac). The actomyosin network is then forced to develop as a result of G proteins' induction of cytoskeleton-regulating proteins.

What stops cells from forming actin polymers?

Actin monomer is sequestered by monomer-binding proteins, reducing its availability for polymerization. As a result, actin does not polymerize when monomer-binding proteins are present in stoichiometric levels.

Q. If a cell increases the activity of its actin severing proteins, will it lead in the short term to MORE or LESS actin polymer mass? Chose the most accurate answer.

Increased severing activity will result in LESS polymer under any conditions.

Increased severing activity will result in NO CHANGE in the total amount of polymer under any conditions. It simply results in a larger number of smaller filaments.

Increased severing activity will result in MORE polymer under any conditions.

If the concentration of free actin monomers is below the Cc for both the plus and minus ends, then MORE polymer will result. If the concentration of free actin monomers is above the Cc for both the plus and minus ends, then LESS polymer will result.

If the concentration of free actin monomers is above the Cc for both the plus and minus ends, then MORE polymer will result. If the concentration of free actin monomers is below the Cc for both the plus and minus ends, then LESS polymer will result.

To know more about actin, visit:

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4 0

1 year ago

During cell division, the chromosomes are held together at the?

bezimeni [28]

Answer: C

Explanation: The two chromatids of a duplicated chromosome are held together at a region of DNA called the centromere. Centromeres are the attachment points for microtubules, which are responsible for the guiding the movement of chromosomes during mitosis and meiosis.

6 0

3 years ago

Read 2 more answers

What is the average size of Trypanosoma brucei?

Agata [3.3K]

I think that would depend because there are 3c different forms of Trypanosoma brucei but for the most all three range between the size of 12-27<span>µm. </span>

8 0

3 years ago

How did richard neumann and vincenzo beltrone feel about the us government action during wartime?

galben [10]

Richard Neumann and Vincenzo Beltrone delay bad about the government during wartime as their freedoms weren't enjoyed.

<h3>What is freedom?</h3>

It should be noted that freedom simply means the rights that are accorded to an individual

During this period, there were four essential freedoms which are:

Freedom of speech and expression.
Freedom of every person to worship God his way.
Freedom from want.
Freedom from fear.

During wartime, the fear was in the heart of millions of people. This was illustrated by both men.

Learn more about freedom on:

brainly.com/question/13273450

7 0

2 years ago