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An example of indirect active transport is?

1) Na⁺/K⁺ pumps
2) P-type ATPases
3) ABC-type ATPases
4) Na⁺/glucose symport
5) both choice B and C

User Wilx
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1 Answer

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Final answer:

The Na+/glucose symport is an example of indirect active transport, where the energy source is the Na+ gradient established by Na+/K+ ATPase, making it secondary active transport.

Step-by-step explanation:

An example of indirect active transport is the Na+/glucose symport. This symport mechanism moves sodium (Na+) and glucose in the same direction into the cell.

The energy for this transport comes from the sodium concentration gradient maintained by the Na+/K+ ATPase, which is a form of primary active transport.

Since glucose is moved into the cell against its concentration gradient by utilizing the energy from the sodium gradient established by the ATPase, it is considered secondary active transport.

The Na+/K+ pumps, P-type ATPases, and ABC-type ATPases are all examples of primary active transport because they directly use ATP to move substances across the membrane against their concentration gradients.

Thus, the correct answer to the question regarding an example of indirect active transport is Na+/glucose symport.

User Adebisi
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