If a substance is moving across a plasma membrane against the concentration gradient, what type of transport is required?

Question

Quizplus · Accepted Answer

Active transport is one of the ways materials move across the plasma membrane. In active transport, a protein moves the material across the membrane from a region of lower concentration to a higher concentration. Because this movement is happening against the concentration gradient (going from low to high concentration rather than high to low) the cell must use energy to make the transportation happen.
Passive transport involves moving substances from an area of high concentration to an area of low concentration.
Osmosis and diffusion are examples of passive transport.

If a Substance Is Moving Across a Plasma Membrane Against