A glucose transporter changes shape when it binds to a molecule of glucose. The shape change moves glucose down its concentration gradient to the opposite side of the membrane, where it detaches from the transport protein. What does this illustrate?

A) facilitated diffusion
B) endocytosis
C) active transport
D) exocytosis
E) osmosis

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Jeffrey White · Accepted Answer

Final Answer : A, Explanation :  This process describes facilitated diffusion, where a transport protein assists in the passive movement of a molecule down its concentration gradient. Active transport requires energy, endocytosis and exocytosis involve the movement of larger molecules or particles across the membrane, and osmosis involves the movement of water molecules specifically.

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