BIO NMDCAT Concept of Evolution

nmdcat.online July 14, 2026

36. Which sequence correctly represents increasing biological complexity during the origin of life?

A. Amino acids → proteins → protocells → first cells

✓

B. Protocells → amino acids → proteins → cells

C. First cells → proteins → amino acids → protocells

D. Proteins → inorganic molecules → protocells → cells

📝 Explanation

Correct: Organic monomers formed polymers, which became organized into protocells and eventually living cells. B, C, D: Incorrect sequence. Concept: Evolutionary sequence.

📖 Additional Information

Amino acids → proteins → protocells → first cells
Protocells → amino acids → proteins → cells
First cells → proteins → amino acids → protocells
Proteins → inorganic molecules → protocells → cells

Correct: Organic monomers formed polymers, which became organized into protocells and eventually living cells. B, C, D: Incorrect sequence. Concept: Evolutionary sequence.

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