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lesson pretestMultiple Choice

Pretest

Question 1 • CMS 2026-2027 Biology CREDIT RECOVERY

Which statement best distinguishes plants and animals as they relate to amino acids?

Answer
A
Plants can only synthesize ten amino acids. Humans synthesize the other ten amino acids.
B
Plants can synthesize all twenty amino acids. Humans must eat plants to obtain all of these amino acids.
C
Plants can synthesize all twenty amino acids. Humans must eat plants or animals to obtain some of these amino acids.
D
Plants and humans both synthesize all twenty amino acids. Humans must supplement a few of these by eating animals.

Explanation

Plants can make all twenty standard amino acids. Humans can make some amino acids, but must obtain the essential amino acids from food, which can come from plants or animals. Choice A correctly describes this difference; humans do not need to get all amino acids from animals or from plants alone.

AI-written and checked against the verified answer.

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