Multiple Choice
In the context of principles of transmembrane transport, what best defines secondary active transport?
9. Transport Across Membranes
Principles of Transmembrane Transport
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In the context of principles of transmembrane transport, how is active transport similar to facilitated diffusion?
A
Both use ATP hydrolysis as their energy source for every transport event.
B
Both move solutes directly through the lipid bilayer without involvement of membrane proteins.
C
Both always move solutes down their electrochemical gradient and therefore never require an energy input.
D
Both move solutes across the membrane using specific transmembrane transport proteins that provide a selective pathway.
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