AP Biologyeasymcq1 pt
Why do cells remain small or highly folded?
A.Surface area must keep pace with volume for exchange
B.Large cells cannot replicate DNA
C.Nuclei dissolve in big cells
D.Big cells lose their membranes
Explanation
Core Concept
As a cell's characteristic size increases, volume grows faster than surface area, so surface-area-to-volume ratio decreases. That can make membrane exchange less able to keep pace with the demands of the cell interior. Cells can compensate by remaining small, changing shape, folding membranes, or using internal transport systems; large cells do not literally 'starve for exchange' in every case.
Correct Answer
ASurface area must keep pace with volume for exchange
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