Question

the diagram below shows three different proteins embedded in a cell membrane, as well as the concentration gradient surrounding the cell. Which statements correctly stated the process shown in the diagram

Answer 1

Protein molecules serve as transporters of molecules across the cell membrane.

Movement of molecules against their concentration gradients is a form of active transport.

What are proteins?

Proteins are organic molecules which are made from amino acids linked together by peptide bonds.

Proteins embedded in the cell membranes serve as transport molecules as well as receptors.

Based on concentration gradients, proteins can function in passive or active transport.

• When molecules move in the the direction of concentration gradient, it passive diffusion.
• When molecules move against the direction of concentration gradient, it passive diffusion.

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