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marin [14]
2 years ago
10

When do plants use oxygen​

Biology
1 answer:
irina1246 [14]2 years ago
8 0

Answer:

When there is no sunlight and they undergo cellular respiration

Explanation:

Plants respire to get energy like animals. In this chemical process, glucose food breaks down in the presence of oxygen to form carbon dioxide and water with the release of energy. See the diagram below

I hope this helps!

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4. The diagram below illustrates the release of chemical A from a human
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Answer:

The cell membrane

Explanation:

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Proteins that bind to cells and stimulate cell division are called
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Answer:

when G1/S cyclin-CDK is activated. Expression of G1/S cyclins is regulated by E2F proteins 

Explanation:

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Commitment to cell division occurs at Start when G1/S cyclin-CDK is activated. Expression of G1/S cyclins is regulated by E2F proteins in conjunction with pRB proteins.. Mitogens stimulated cell division by increasing the amount of G1 cyclins.

3 0
3 years ago
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A fox is a type of mammal that is related to dogs. How does a fox most likely respond to hot air temperatures in a way that ecto
sveta [45]

Answer:

By panting or breathing heavily.

Explanation:

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Hence, when the temperature of the external environment rises as a result of hot air, the body of an ectotherm (that is homeothermic, that is, maintain a relatively constant body temperature irrespective of the temperature of the external environment) will adjust so as to keep its temperature relatively constant.

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5 0
3 years ago
What parts of a nucleotide make up the backbone of a nucleic acid? pairs of nitrogen bases pairs of sugars sugar and nitrogen ba
mixer [17]
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Therefore your answer is sugar and phosphate.
4 0
2 years ago
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Vertebrates developed about 550 million years ago. the oldest vertebrate fossils are those of _____ with no jaws.
jarptica [38.1K]
Vertebrates developed about 550 million years ago. The oldest vertebrate fossils are those of FISH with no jaws. These e<span>arly jawless fish did not have paired fins and their bodies were covered with heavy, bony scaled, but their skeletons were made of cartilage. For the next 50 million years, they were the only vertebrates.</span>
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3 years ago
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