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The channels in cell membranes that help substances to move in and out of cells during active transport are made of A. protein. B. chlorophyll. C. cytoplasm D. carbohydrates.

The channels in cell membranes that help substances to move in and out of cells during active transport are made of A. protein. B. chlorophyll. C. cytoplasm D. carbohydrates.
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The channels in cell membranes that help substances to move in and out

of cells during active transport are made of
A. protein.
B. chlorophyll.
C. cytoplasm
D. carbohydrates.

asked
User Serge Belov
by
7.8k points

1 Answer

2 votes

Answer: proteins

Step-by-step explanation:

answered
User Jeff Sheets
by
8.2k points
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