Primavera Biology B Unit 4: Evolution Questions With Complete Solutions
CHECKPOINT 17 What gas present in today's atmosphere was largely absent from early Earth's atmosphere? correct answer: oxygen What are some possible sources for early organic molecules? Select all that apply. correct answer: existing inorganic molecules forming into more complex organic ones by using energy from lightning simple inorganic compounds arriving on Earth through meteorites or other objects Which option correctly replaces X and Y? The Miller-Urey experiment resulted in the formation of several X molecules that are the basis for Y. correct answer: X: amino acid Y: proteins Study the experiment illustrated by the following image: What aspect of early Earth was the spark meant to recreate? correct answer: lightning What were the products of experiments that were similar to the one Miller and Urey conducted? correct answer:
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