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denis-greek [22]
2 years ago
7

What is change over time? A. adaptation B. evolution C. mimicry D. fitness

Biology
1 answer:
Naddika [18.5K]2 years ago
5 0

Answer:

evolution

Explanation:

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Living cells cannot use heat to provide the activation energy for biochemical reactions because ________. Which choice(s) comple
postnew [5]

Considering the following;

I. Heat is not readily available to all living cells.

II. Heat at excessive amounts denatures proteins.

III. Heat does not provide the activation energy for their reactions.

IV. When a critical temperature is reached, proteins no longer function

Answer;

I and IV

Explanation;

Living cells cannot use heat to provide the activation energy for biochemical reactions because heat is not readily available to all living cells and also when a critical temperature is reached, proteins no longer function.

Too much heat can kill an organism by rendering its organelles, cells, tissues and organs permanently inoperable and un-salvageable. The same process can be observed in tissues at low temperatures, and is the cause of frostbite. This is because enzymes are denatured by high temperature and inactivated by low.

7 0
3 years ago
Kristen cut her hand on a piece of glass. As the blood clots, how do white blood cells prevent bacteria on the glass from infect
gayaneshka [121]
So white blood cell’s(WBCs for short) main job is to fight infections.
They do this by swallowing the infection.


You see,WBCs do not have a permanent shape.this means that they enlarge and decrease size of parts of their body.So they grow two long arm like structures called pseudopodia which swallow the infection.(pseudopodia means false feet).
You can see the process in the photo I attached from google

5 0
3 years ago
LET'S CHECK
Daniel [21]

Answer:

I.

4) The deoxygenated blood then travels through the veins and enters the right side of the heart.

1) The blood leaves the heart through the aorta.

2) The blood travels throughout the body via the arteries to the capillaries.

3) In the capillaries, the exchange of nutrients and gases occurs. Oxygen is absorbed by the cells while carbon dioxide is released into the blood.

II.

2) Exchange of gases happens as oxygen is received by the blood and carbon dioxide is released.

1) The deoxygenated blood flows from the right side of the heart to go to the lungs.

3) The oxygenated blood then returns to the left side of the heart.

Explanation:

4 0
2 years ago
Please answer the questions fast please science​
Dmitrij [34]
Can I get brainlyest? And I’ll answer in comments
4 0
3 years ago
Where are you most likely to find ligaments in the body?
KatRina [158]

Answer:

( A. joints between long bones )

3 0
3 years ago
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