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Glucose typically enters the cell through which mechanism?
  • a)
    Pinocytosis through a channel protein
  • b)
    Active transport by a glucose transport protein
  • c)
    Simple diffusion through the cell membrane
  • d)
    Facilitated diffusion through a carrier protein
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Glucose typically enters the cell through which mechanism?a)Pinocytosi...
Glucose, being a polar molecule, cannot easily pass through the cell membrane via simple diffusion because of the hydrophobic interior of the lipid bilayer. Instead, glucose typically enters the cell through facilitated diffusion, which involves the use of carrier proteins. Carrier proteins specific to glucose bind to the molecule on one side of the membrane and undergo a conformational change to transport glucose across the membrane and release it on the other side. This process does not require energy expenditure by the cell and allows glucose to move down its concentration gradient. It is important to note that facilitated diffusion is a passive process and does not require the input of cellular energy.
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