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

35. During a laboratory simulation of primitive Earth, ultraviolet radiation is used instead of electrical sparks. What is the purpose of the UV radiation?

A. To sterilize the apparatus
B. To provide energy for chemical reactions
✓
C. To increase atmospheric oxygen
D. To destroy amino acids after formation

📝 Explanation

Correct: UV radiation, like lightning, supplied energy to drive prebiotic chemical reactions. A: Sterilization is not the objective. C: UV does not generate oxygen. D: The goal is synthesis, not destruction. Concept: Energy sources in chemical evolution.

📖 Additional Information

  • To sterilize the apparatus
  • To provide energy for chemical reactions
  • To increase atmospheric oxygen
  • To destroy amino acids after formation

Correct: UV radiation, like lightning, supplied energy to drive prebiotic chemical reactions. A: Sterilization is not the objective. C: UV does not generate oxygen. D: The goal is synthesis, not destruction. Concept: Energy sources in chemical evolution.

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