Cell Size

AP Biology· difficulty 2/5

Which structural feature increases a cell's surface-area-to-volume ratio for efficient absorption?

A
$Smooth ER$
B
$Microvilli$
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C
$Centrioles$
D
$Nucleolus$

Explanation

Microvilli are finger-like membrane projections (e.g., on intestinal epithelial cells) that dramatically expand absorptive surface.

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