Active Transport

Active Transport

Cells need to move substances in and out to maintain balance and function properly. Active transport is a process that requires energy to move molecules against their concentration gradient from a lower concentration to a higher concentration. Unlike passive transport, which relies on natural diffusion, ac...

Imagine rolling a heavy stone uphill. You need to push hard and use energy because gravity pulls it down. Similarly, moving molecules from low to high concentrations in your body requires energy. This process is called active transport.

Unlike diffusion, where molecules flow naturally from high to low concentration, active transport works ...