Proteins perform numerous functions in the cell membrane, one of which is to regulate the movement of materials, atoms of elements and other ions as they are entering and exiting the cell. These proteins that play this significant role, would be classified as transmembrane proteins, which are specific kind of intergral proteins.
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The answer is I ,II and III
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cell walls and chloroplasts
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the enzymes have been denatured
Plagues wiped out the entire crop in a large region
