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4. Membrane Transport

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

transferring specific water-soluble molecules and ions across their membranes

Back (Answer)

membrane transport proteins

#2
Front (Question)

allowing passive transmembrane movement, primarily of water and small inorganic ions. interact with the solute to be transported much weaklier

Back (Answer)

Channels

#3
Front (Question)

Passive transport

Back (Answer)

downhill

#4
Front (Question)

2 active transport

Back (Answer)

Secondary active transport Primary transport

#5
Front (Question)

undergo sequential conformational changes to transport specific small molecules across membranes

Back (Answer)

transporters

#6
Front (Question)

Active transport

Back (Answer)

Uphill and uses ATP

#7
Front (Question)

2 passive transport

Back (Answer)

Passive diffusion Facilitated diffusion

#8
Front (Question)

cannot transport certain amino acids (including cystine, the disulfide-linked dimer of cysteine) from either the urine or the intestine to the blood

Back (Answer)

cystinuria

#9
Front (Question)

their polypeptide chains traverse the lipid bilayer multiple times

Back (Answer)

multi pass transmembrane proteins

#10
Front (Question)

impermeable to ions

Back (Answer)

Lipid bilayers

#11
Front (Question)

“uphill”, against their electrochemical gradients

Back (Answer)

Active transport

#12
Front (Question)

uncharged molecule

Back (Answer)

concentration gradient

#13
Front (Question)

charged molecule

Back (Answer)

membrane potential

#14
Front (Question)

intermediate state, inaccessible

Back (Answer)

occluded

#15
Front (Question)

negative insided

Back (Answer)

electrical potential

#16
Front (Question)

three principal classes of ATP-driven pumps

Back (Answer)

P-type pumps ABC transporters V-type pumps

#17
Front (Question)

energy stored in concentration gradients

Back (Answer)

coupled transport

#18
Front (Question)

energy from light

Back (Answer)

light- or redox-driven pumps

#19
Front (Question)

hydrolysis of ATP

Back (Answer)

ATP-driven pumps

#20
Front (Question)

passive transport,

Back (Answer)

Uniporters

#21
Front (Question)

structurally and functionally related multipass trans membrane proteins. they phosphorylate themselves during the pumping cycle

Back (Answer)

P-type pumps

#22
Front (Question)

transfer of one solute depends on the transport of a second

Back (Answer)

coupled transporters

#23
Front (Question)

e the free energy of ATP hydrolysis is used to directly drive the transport of a solute against its concentration gradient.

Back (Answer)

primary active transport

#24
Front (Question)

transfer in the same direction

Back (Answer)

Symporters (co-transporters)