DIRECTIONS: The following questions have four choices (a), (b), (c) and (d) out of which only one is correct. You have to choose the correct alternative.
Transport proteins are required for -
A
Diffusion
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B
Osmosis
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C
Facilitated transport
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D
Facilitated transport and active transport
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Solution
The correct option is DFacilitated transport and active transport Transport proteins are required for facilitated transport and active transport. A transport protein is a protein that serves the function of moving other materials within an organism. Transport proteins are vital to the growth and life of all living things. They help in transportation of ions, small molecules or macromolecules.