Explain the role of proteins within plasma membranes.

The role of proteins within plasma membranes.

• they provide structural support for the membrane. By various interactions, they help to anchor the phospholipid bimolecular layer.
• They assist in active transport of materials across the membranes by acting as channels through which especially hydrophilic materials pass
• In combination with carbohydrates, as glycoproteins, they act as recognition sites.
• They act as enzymes, catalyzing many membrane-associated reactions.
• They facilitate diffusion by acting as channels and carriers.
• They act as transducers. For example, proteins of the electron transport system in mitochondria
• They act as electron carriers in many reactions.

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