Sam88058 Sam88058

08-03-2016
Biology

contestada

Which characteristics do cell membranes and cell walls have in common?
A) They are selectively permeable and aid in communication.
B) They contain mostly cellulose and are selectively permeable.
C) They store carbohydrates and aid in communication.
D) They are rigid structures and contain mostly cellulose.

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Kalahira Kalahira

23-08-2017

A/Cell membranes and cell walls are selectively permeable and aid in communication.
Explanation: Cell Membranes or cell wall have phospholipid bi layer which functions as a selectively permeable barrier that separates an internal environment from an external one. They are selective permeable through passive process (concentration gradient) allowing certain molecule diffuse into cells

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