9
QuizMultiple Choice

The Building Blocks of Life — Test

Question 9 • Biology

Which statement best describes the relationship between photosynthesis and cellular respiration?

Answer
A
Photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon back into the atmosphere.
B
Only plants perform photosynthesis, and only animals perform cellular respiration.
C
Photosynthesis is part of the carbon cycle, and cellular respiration is not.
D
Photosynthesis releases carbon into the atmosphere, and cellular respiration removes carbon from the atmosphere.

Explanation

During photosynthesis, organisms take in carbon dioxide from the atmosphere and use its carbon to make sugars, so photosynthesis removes carbon from the air. During cellular respiration, organisms break down sugars and release carbon dioxide, returning carbon to the atmosphere. Therefore, the best statement is that photosynthesis removes carbon from the atmosphere and cellular respiration releases it back.

AI-written and checked against the verified answer.

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