Unit Test Which title best fits Rahma's notes? Rahma took these notes on a process involving the movement of molecules, but she forgot to title them. O Active Transport in Cells -Causes molecules to move until they are evenly distributed -Moves from high concentration to low concentration -Has no need for added energy -Can occur with or without a membrane being present O Passive Transport in Cells O Osmosis O Diffusion

passive transport

Explanation

he simplest forms of transport across a membrane are passive. Passive transport does not require the cell to expend any energy and involves a substance diffusing down its concentration gradient across a membrane.

C. "Using the sodium-potassium pump involves the hydrolysis of ATP and the

release of Nat to the outside of the cell."

Explanation:

The use of a sodium-potassium pump is a form of active transport, not diffusion. It also requires energy because the pump moves ions against their concentration gradient (low to high), unlike diffusion.