Question

did you get it? the movement of a substance against its concentration gradient (from low to high concentration) through a carrier protein is called_. (note: this uses energy) a. active transport b. osmosis c. facilitated diffusion d. selective permeability

Explanation:

Active transport is the movement of substances against their concentration gradient (from low to high concentration) through a carrier protein and requires energy. Osmosis is the diffusion of water across a semi - permeable membrane. Facilitated diffusion is the movement of substances down their concentration gradient with the help of carrier or channel proteins and does not require energy. Selective permeability refers to the property of a membrane that allows certain substances to pass through while restricting others.

Answer:

A. Active Transport