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ella [17]
3 years ago
8

The __________ is a fluid structure that allows membrane proteins to move freely.

Biology
2 answers:
BARSIC [14]3 years ago
7 0
The Cell membrane is the answer.
Stolb23 [73]3 years ago
7 0
The cell membrane is a semipermeable membrane that allows things to go in and out of the cell
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