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

26. During an experiment, a student replaces methane with carbon dioxide while keeping all other conditions unchanged. Compared with the original Miller-Urey experiment, the production of amino acids would likely:

A. Increase substantially
B. Remain exactly the same
C. Decrease because the atmosphere becomes less reducing
✓
D. Produce complete proteins instead

📝 Explanation

Correct: A less reducing atmosphere is less favorable for organic synthesis. A: Opposite of expected result. B: Gas composition affects outcomes. D: Proteins are not formed directly. Concept: Experimental reasoning.

📖 Additional Information

  • Increase substantially
  • Remain exactly the same
  • Decrease because the atmosphere becomes less reducing
  • Produce complete proteins instead

Correct: A less reducing atmosphere is less favorable for organic synthesis. A: Opposite of expected result. B: Gas composition affects outcomes. D: Proteins are not formed directly. Concept: Experimental reasoning.

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