Question

Sodium ions cross a membrane through transport proteins that receive an energy boost, This is an Example of

• A. Passive transport
• B. Active transport
• C. Facilitated diffusion
• D. Both (a) and (c)

Answer 1

The correct option is B Active transport

The movement of sodium ions utilizes ATP. This utilization of an ATP molecule provides the cell with an energy boost which enables the transport the sodium ions across the cell membrane. This is an example of active transport of molecules across the cell membrane.

So, the correct answer is 'active transport'.