OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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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?
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protein
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chlorophyll
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cytoplasm
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carbohydrates
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Explanation:
Detailed explanation-1: -Channel proteins are not used in active transport because substances can only move through them along the concentration gradient .
Detailed explanation-2: -Transmembrane channels, also called membrane channels, are pores within a lipid bilayer. The channels can be formed by protein complexes that run across the membrane or by peptides. They may cross the cell membrane, connecting the cytosol, or cytoplasm, to the extracellular matrix.
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