Biology, 19.11.2020 20:20 mrsclnantambu5956

The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of? * A. Carbohydrates
B. Lipds
C. Bi-Lipids
D. Proteins

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The cell membrane contains channels and pumps that help move materials from one side to the other. W...

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