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BIO NMDCAT Concept of Evolution
nmdcat.online July 14, 2026

15. Which statement best distinguishes chemical evolution from biological evolution?

A. Chemical evolution occurs only in plants.
B. Chemical evolution preceded the appearance of the first living cell.
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C. Biological evolution occurred before chemical evolution.
D. Both describe changes only within existing organisms.

📝 Explanation

Correct: Chemical evolution explains the origin of life's building blocks, whereas biological evolution begins after life exists. A, C, D: Scientifically incorrect. Concept: Comparison of evolutionary concepts.

📖 Additional Information

  • Chemical evolution occurs only in plants.
  • Chemical evolution preceded the appearance of the first living cell.
  • Biological evolution occurred before chemical evolution.
  • Both describe changes only within existing organisms.

Correct: Chemical evolution explains the origin of life's building blocks, whereas biological evolution begins after life exists. A, C, D: Scientifically incorrect. Concept: Comparison of evolutionary concepts.

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