Question

which statement about the cell membrane is true? it contains cellulose and sugars that are involved in communication. it is present in animal cells only. it is rigid and elastic for supporting the cells shape. it prevents harmful substances from entering a cell.

Explanation:

• Cellulose is in plant cell walls, not cell membranes.
• Cell membranes are in both plant and animal cells.
• Cell walls (not membranes) are rigid.
• Cell membranes are selectively permeable and prevent harmful substances from entering.

Answer:

It prevents harmful substances from entering a cell.