Question

animal and plant cells
quiz complete
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which statement is true about a cell wall but not a cell membrane?
it forms the outer layer of a cell.
it gives an animal cell its shape.
it is selectively permeable.
it is made mostly of cellulose.
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Explanation:

• Cell walls are made mostly of cellulose, which is a characteristic unique to cell walls (not cell membranes).
• Cell membranes also form the outer layer of animal cells (so the first option is incorrect as it can apply to cell membranes in animal cells).
• Animal cells do not have cell walls (so the second option is incorrect).
• Both cell membranes and cell walls are selectively permeable (so the third option is incorrect).

Answer:

It is made mostly of cellulose.