Which of the following accurately describes how carbohydrates and lipids differ?
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In cells, membrane proteins are responsible for the passage of substances that can't cross the membrane on their own. Channel and carrier proteins are involved in facilitated diffusion. Pumps are involved in active transport. In terms of their properties or functions, which statement most accurately describes how these three types of membrane proteins compare?
a. Among the three types, only pumps are thought to undergo a shape change as part of their function.
b. Among the three types, only pumps can concentrate substances on one side of the membrane.
c. Channel and carrier proteins are integral membrane proteins; pumps are peripheral membrane proteins.
d. Pumps are selective; channel and carrier proteins are not selective.
b. Among the three types, only pumps can concentrate substances on one side of the membrane.
a. Among the three types, only pumps are thought to undergo a shape change as part of their function.
b. Among the three types, only pumps can concentrate substances on one side of the membrane.
c. Channel and carrier proteins are integral membrane proteins; pumps are peripheral membrane proteins.
d. Pumps are selective; channel and carrier proteins are not selective.
b. Among the three types, only pumps can concentrate substances on one side of the membrane.
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