Categories: Biology WAEC

Which of the following materials is not a living semi-permeable membrane?

A. pig’s bladder
B. Unripe pawpaw fruit
C. Yam tuber
D. Sheet of cellophane

Correct Anwer:

Option D – Sheet of cellophane

Explanation

Semipermeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by osmosis. There are two examples of semi-permeable membrane, which are non-living and living semi-permeable membrane. Examples of non-living semi-permeable membrane which are permeable to water but not solvent e.g copper sulphate solution are visking tube, parchment and cellophane.

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