What are two differences between active transport and passive transport in terms of energy?

Answer 1

Active transport requires energy for the organism to move things where as passive transport just relies on the net movement of things without the organism interfering.

Answer 2

Active transport requires energy in the form of ATP to move molecules across the cell membrane against their concentration gradient, while passive transport does not require energy and relies on the concentration gradient to move molecules from an area of higher concentration to an area of lower concentration. Additionally, active transport can move molecules in both directions across the membrane, while passive transport can only move molecules down the concentration gradient.