Concept #2: GLUT1 Transporter

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

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

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

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

Practice: Isotonic is a term that describes what?