Which of the following transport processes always requires metabolic energy?

Question

Quizplus · Accepted Answer

Vesicular transport always requires metabolic energy in the form of ATP to move substances into or out of the cell using membrane-bound vesicles. Diffusion and osmosis do not require energy because they occur spontaneously from high to low concentration or low to high water concentration, respectively. Carrier-mediated transport can be either passive or active, depending on the direction and energy requirements of the transport, so it is not always reliant on metabolic energy.

Which of the Following Transport Processes Always Requires Metabolic Energy