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In order to function properly, cells must perform many reactions. Metabolism is the sum of all the chemical reactions in an organism. During metabolism, ATP
I. is broken down to fuel chemical reactions.
II. is created by chemical reactions.
III. is shuttled from one cell to another.
A. I, II, and III
B. I and II only
C. I and III only
D. III only

Respuesta :

Answer:

B. I and II only

Explanation:

Metabolism includes catabolism and anabolism. Catabolism is the breakdown of complex substances into simpler ones. Catabolic reactions release energy which is used to phosphorylate ADP into ATP. Therefore, the exergonic catabolic pathways are mostly accompanied by ATP synthesis. On the other hand, the endergonic anabolic reactions consume ATP. ATP hydrolysis release energy and the energy drives the anabolic reactions. So, metabolism includes synthesis of ATP during exergonic reactions and breakdown of ATP during endergonic reactions.

For example, the reactions of cellular respiration form ATP while dark reactions of photosynthesis consume ATP to form glucose.

Answer: I and II only

Explanation: Because it is right !!!!!

It was tested on a test 100% right

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