The correct option is (a) transport protein.
A protein that moves other elements within an organism is referred to as a transport protein. All living organisms require transport proteins for growth and survival. Transport proteins come in a variety of varieties. Transport proteins that participate in assisted diffusion include channel proteins, gated channel proteins, and carrier proteins.
To carry molecules across the plasma membrane, transport proteins work in both active and passive transport. The plasma membrane has two main groups of transport proteins, and each one facilitates the passage of water-loving molecules.
Therefore, The correct option is (a) transport protein.
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