An experimental test of the hypothesis to explain the origin of the first organic compounds on Earth might include all of the following sequential steps except
A) assembling an atmosphere with H2,CH4,NH3,and H2S.
B) placing this atmosphere over liquid water.
C) inoculating with a few bacteria to get the process started.
D) increasing the temperature of the gases.
E) providing energy with electrical spark discharges.
Correct Answer:
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Q4: Eukaryotic cells acquired mitochondria and chloroplasts by
A)endosymbiosis.
B)exocytosis.
C)pinocytosis.
D)mutation.
E)natural
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A)1 million
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