Which of the following best describes what a uniporter does in the context of membrane transport?
Show answer and explanation
Correct answer: Carries a single solute down its concentration gradient
A uniporter is a type of carrier protein that facilitates passive transport of one kind of solute down its concentration gradient — without coupling to another solute or using ATP.
Keep practicing
More Membrane Transport Mechanisms questions
- Why is the Na⁺/K⁺-ATPase pump considered electrogenic, and what is a consequence for the membrane potential?
- Which of the following phenomena best illustrates secondary active transport (cotransport)?
- Which of the following correctly describes “simple diffusion” across the plasma membrane?
- Which transport mechanism requires no energy and utilizes a membrane-embedded channel or carrier protein to move solutes down their concent…
- Which of the following molecules would most likely cross a cell membrane by passive diffusion rather than facilitated diffusion or active t…
- What distinguishes primary active transport from secondary active transport (cotransport)?