Question: Select the best answer for the question. 17. There are two types of transport proteins: proteins, which form a pore or tunnel through the cell
Select the best answer for the question. 17. There are two types of transport proteins: proteins, which form a pore or tunnel through the cell membrane to facilitate movement, and proteins, which bind to the substance to help it move across the cell membrane. O A. tunnel; substance-specific O B. carrier; channel O C. channel; carrier O D. substance-specific; tunnel
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