23
QuizMultiple Choice

Natural Selection and Evolution — Test

Question 23 • CMS 2026-2027 Biology CREDIT RECOVERY

Why are the Miller-Urey experiments essential to the theory of evolution?

Answer
A
They showed that electricity can create life.
B
They showed how organic molecules could be made from Earth's early atmosphere.
C
They showed that life can only come from life.
D
They showed the role that natural selection played in the evolution of modern day organisms.

Explanation

The Miller-Urey experiments simulated conditions thought to resemble early Earth and produced organic molecules, including amino acids, from simpler substances. This showed a possible way that life’s building blocks could form naturally; the experiments did not create life or demonstrate natural selection.

AI-written and checked against the verified answer.

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