What is the process called when molecules are transported across the cell membrane without expending energy?

Understand the Problem

The question is asking for the name of the process by which molecules can move across a cell membrane without the use of energy, and it provides multiple-choice answers to choose from.

More Information

Passive transport is a process where molecules move across a cell membrane without the need for cellular energy. This process relies on the concentration gradient of the molecules, naturally allowing them to move from an area of high concentration to an area of low concentration.

Tips

A common mistake is confusing passive transport with active transport. Remember that active transport requires energy, while passive transport does not.

Sources

• Diffusion and passive transport - Khan Academy - khanacademy.org
• 3.5 Passive Transport – Concepts of Biology - opentextbc.ca
• 3.1 The Cell Membrane – Anatomy & Physiology - open.oregonstate.education