Final answer:
True, passive transport does not require energy as substances move naturally from higher to lower concentration areas without ATP, unlike active transport.
Step-by-step explanation:
The statement is true: In passive transport, no energy is spent to pass a substance across a membrane. Passive transport is the movement of substances across the membrane without the expenditure of cellular energy. This can occur through simple diffusion, where substances move from an area of higher concentration to an area of lower concentration, or through facilitated diffusion with the help of membrane proteins such as carrier proteins and channel proteins. Both of these methods occur naturally and do not require adenosine triphosphate (ATP). This is in contrast to active transport, which does require ATP to move substances, often against their concentration gradient, with the assistance of protein carriers.