Question

Which of the following phrases best describes active transport?

a) Relies on diffusion of materials
b) Moves substances from high to low concentration
c) Does not use chemical energy
d) Moves substances from low toward high concentration

Answer 1

Active transport is the process of moving molecules from an area of low concentration to an area of high concentration. It requires energy and uses ATP as a source of energy. Examples include the sodium-potassium pump and the movement of ions against their concentration gradient.

Step-by-step explanation:

Active transport is the process of moving molecules from an area of low concentration to an area of high concentration, which is opposite to diffusion. This type of transport requires energy and is called "active" because it uses ATP as a source of energy. Examples of active transport include the sodium-potassium pump and the movement of ions against their concentration gradient.