THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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facilitated diffusion
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pinocytosis
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exocytosis
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Na+/K+ pump
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Detailed explanation-1: -Three transport processes that do not require energy are; diffusion, osmosis and facilitated diffusion. Facilitated diffusion is a passive process: the solutes move down their concentration gradient and do not require the expenditure of cellular energy for this process.
Detailed explanation-2: -Simple diffusion does not require energy: facilitated diffusion requires a source of ATP.
Detailed explanation-3: -Facilitated diffusion doesn’t require ATP because it is the passive movement of molecules such as glucose and amino acid across the cell membrane. It does so with the aid of a membrane protein since the glucose is a very big molecule. Examples of membrane proteins include channel proteins and carrier proteins.
Detailed explanation-4: -Video Solution: Active transport does not require ATP.
Detailed explanation-5: -Final answer: Active transport requires energy in the form of ATP.