Which phrases are true for ONLY channels,ONLY carrier proteins, BOTH channels an

Question

Which phrases are true for ONLY channels,ONLY carrier proteins, BOTH channels and carriers (ALL of them should be matched to one category)

a) allow water molecules and small ions to flow quickly across the membrane

b) transport primarily small polar organic molecules

c) are integral membrane proteins

d) provide a continuous path across the membrane

e) transport solutes down a concentration or electrochemical gradient

f) provide a hydrophilic path across membrane

g) undergo a change in shape to transport solute across the membrane

Explanation / Answer

a) Allow water molecules and small ions to flow quickly across the membrane – channel proteins

b) Transport primarily small polar organic molecules – channel proteins

c) Are integral membrane proteins - Both

d) Provide a continuous path across the membrane – channel proteins

e) Transport solutes down a concentration or electrochemical gradient – channel proteins

f) Provide a hydrophilic path across membrane - channel proteins

g) Undergo a change in shape to transport solute across the membrane – carrier proteins

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