Multiple Choice
Why did it take so long for eukaryotes to evolve after photosynthetic prokaryotes began releasing O2 into the atmosphere?
A) O2 moves slowly through larger cells,making it hard for them to gather O2;thus,higher O2 concentrations had to accumulate before eukaryotic cells could be efficiently supported.
B) The ability to use O2 had to evolve before cells could survive in an O2-rich atmosphere.
C) The ability to break down the waste products of O2 use had to evolve before cells could use it to create energy.
D) Enough prokaryotes had to become extinct to provide eukaryotes with a niche to occupy before they could evolve.
Correct Answer:
Verified
Correct Answer:
Verified
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