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jolli1 [7]
3 years ago
7

Molecules A and B come in contact with the cell membrane of the same cell. Molecule A passes through the membrane readily, but m

olecule B does not. Which statement could describe molecules A and B?
Biology
1 answer:
aivan3 [116]3 years ago
3 0

Answer:

Molecule A is a simple sugar or amino acid, while molecule B is a starch or protein.

Explanation:

Molecule A, as a simple sugar or amino acid, consists of small molecules which can readily pass through the cell membrane, while Molecule B, as a starch or protein, consists of large molecules, thus, can't pass across the cell membrane.

This is the reason why the cell membrane is considered to be selectively permeable.

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