Biology books earlier in this century assumed that the earliest protocells would have to be autotrophs. This concept appears to be
A. correct, since heterotrophs would depend upon eating autotrophs.
B. correct, since life is not possible without ATP, which is only available in living systems.
C. correct, since glycolysis and fermentation only occur after oxygen is present from photosynthesis.
D. incorrect, since the primordial soup could contain many preformed food molecules.
E. incorrect, since glycolysis and fermentation require complex enzymes for catalytic reactions.
Ans: D. incorrect, since the primordial soup could contain many preformed food molecules.
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