Multiple Choice
Larger single-celled organisms require a higher oxygen concentration than smaller ones do because the large cells
A) have a faster metabolic rate per unit mass.
B) have a slower metabolic rate per unit mass.
C) have a lower surface area-to-volume ratio.
D) have a greater surface area-to-volume ratio.
E) divide more quickly than small cells do.
Correct Answer:

Verified
Correct Answer:
Verified
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