In which of the following cases is energy NOT needed for transmembrane transport?
A)Lysine moves into the cell against its concentration gradient via the Na⁺/lysine symporter.
B)Potassium ions (K⁺)move out of the cell down the K⁺ concentration gradient via potassium channels.
C)Glucose moves into the cell down its concentration gradient via a glucose uniporter.
D)The second and third answers are correct.
E)all of the above

Question

Quizplus · Accepted Answer

Energy is not required for transport processes that move substances down their concentration gradients, such as in options B (potassium ions moving out of the cell via potassium channels) and C (glucose moving into the cell via a glucose uniporter). These processes rely on passive transport mechanisms.

In Which of the Following Cases Is Energy NOT Needed