Which of the Following Most Accurately Describes Diffusion

Question

Which of the following most accurately describes diffusion?
A) ATP-driven
B) Passive transport
C) Requires a pressure or pushing force
D) Causes solute to move uphill

Accepted Answer

Diffusion is a passive transport process, meaning that it does not require energy input in the form of ATP. It is driven solely by the concentration gradient, or the difference in concentration of a substance between two areas. Diffusion does not require a pressure or pushing force, nor does it cause solutes to move uphill.