Scientists Once Assumed That the Earliest Protocells Would Have Been

question 62

Multiple Choice

Scientists once assumed that the earliest protocells would have been autotrophs.This concept appears to be

• A)correct,since heterotrophs would depend upon eating autotrophs.
• B)correct,since glycolysis and fermentation only occur after oxygen is present from photosynthesis.
• C)incorrect,since the primordial soup likely contained many preformed food molecules suitable for heterotrophic metabolism.
• D)incorrect,since glycolysis and fermentation require complex enzymes for catalytic reactions.

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