The majority of solutes that diffuse across the plasma membrane cannot move dire
ID: 165286 • Letter: T
Question
The majority of solutes that diffuse across the plasma membrane cannot move directly through the lipid but depend upon carriers or channels. Use the answer options to identify if each phrase below is true for channels, carriers, or both channels and carriers. Answer options: Channels Only Carriers Only Both Channels and Carriers Transport solutes down a concentration gradient. Undergo a change in shape to continually transport solutes across the membrane. Allow water molecules and small ions molecules to flow quickly across the membrane. Provide a continuous path (non-interrupted opening) across the membrane. Are integral membrane proteins. Transport glucose across the membrane.Explanation / Answer
1. C) Both Channels and carriers transport solutes down a concentration gradient or electrochemical gradient.
2. B) Only carriers undergo a change in shape to transport solutes across the membrane.
3. A) Only channels allow water molecules and small ions to flow quickly across the membrane.
4. A) Only channels provide a continuous path across the membrane.
5. C) Both channels and carriers are integral membrane proteins.
6. B) Only carriers transport glucose molecules across membrane.
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