Which of the following lists the three types of transfer proteins involved in active transport?

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Multiple Choice

Which of the following lists the three types of transfer proteins involved in active transport?

Active transport uses energy to move substances against their gradient, and it relies on membrane proteins to do this. The main types involved are pumps that directly use energy (like ATPases) and secondary active transporters that couple movement to another gradient. In secondary active transport, you see symporters, which move two substances in the same direction, and antiporters, which move them in opposite directions. Uniporters typically mediate facilitated diffusion without energy input, so they don’t fit active transport. Among the options, the one that includes both symporters and antiporters aligns with the core active-transport mechanisms, though the precise trio is pumps, symporters, and antiporters.

Active transport uses energy to move substances against their gradient, and it relies on membrane proteins to do this. The main types involved are pumps that directly use energy (like ATPases) and secondary active transporters that couple movement to another gradient. In secondary active transport, you see symporters, which move two substances in the same direction, and antiporters, which move them in opposite directions. Uniporters typically mediate facilitated diffusion without energy input, so they don’t fit active transport. Among the options, the one that includes both symporters and antiporters aligns with the core active-transport mechanisms, though the precise trio is pumps, symporters, and antiporters.

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