Cell Biology

Learn the toughest concepts covered in Cell Biology with step-by-step video tutorials and practice problems by world-class tutors

9. Transport Across Membranes

Passive Transport: Diffusion and Osmosis

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Diffusion

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GLUT1 Transporter

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Osmosis

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4
Problem

Which of the following describes the diffusion of water across a membrane?

5
Problem

The plasma membrane by itself is impermeable to all charged molecules.

6
Problem

Which of the following transport proteins transports two molecules across the membrane in the same direction?

7
Problem

Carrier proteins that transport molecules via facilitated diffusion require energy from ATP.

8
Problem

Isotonic is a term that describes what?