College Biology Quiz
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CELL STRUCTURE & FUNCTION
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Why are most cells microscopic in size, considering that diffusion must supply the entire cytoplasm with nutrients and oxygen?
A
Microscopic size keeps diffusion distances short and maintains favorable surface area-to-volume ratio.
B
Microscopic size is required because only small cells can have cell membranes.
C
Microscopic size prevents specialization, which would otherwise reduce organismal fitness.
D
Microscopic size ensures cells have fewer enzymes, which increases metabolic efficiency.
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