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

4. During the Miller-Urey experiment, electrical sparks represented:

A. Solar radiation
B. Volcanic heat
C. Lightning in the primitive atmosphere
✓
D. Ocean currents

📝 Explanation

Correct: Electrical discharge simulated lightning, providing energy for chemical reactions. A: UV radiation was not simulated by sparks. B: Heat alone was not represented. D: Ocean currents were unrelated. Concept: Experimental design.

📖 Additional Information

  • Solar radiation
  • Volcanic heat
  • Lightning in the primitive atmosphere
  • Ocean currents

Correct: Electrical discharge simulated lightning, providing energy for chemical reactions. A: UV radiation was not simulated by sparks. B: Heat alone was not represented. D: Ocean currents were unrelated. Concept: Experimental design.

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