Sodium ions are moving with their concentration gradient with the use of a protein channel across a plasma membrane.Determine the type of membrane transport used to transport these sodium ions.
A)primary active transport
B)simple diffusion
C)osmosis
D)facilitated diffusion

Question

Quizplus · Accepted Answer

Facilitated diffusion is the movement of particles across a membrane from an area of higher concentration to an area of lower concentration through a protein channel. In this case, sodium ions are moving down their concentration gradient with the use of a protein channel, which fits the description of facilitated diffusion. The other options, such as primary active transport and osmosis, involve the movement of particles against their concentration gradient and do not apply to this scenario. Simple diffusion does not involve the use of a protein channel, so it is not the best choice for this question.

Sodium Ions Are Moving with Their Concentration Gradient with the Use