Unit 2 · 2.6 — Facilitated Diffusion [cite: 9, 28]
6 learning items · ~1.15% exam weight (unit share)
Everything to learn here
- Concept: Membrane transport proteins facilitate the rapid diffusion of charged ions and large polar molecules across the hydrophobic core of the membrane [cite: 13, 14].
- Vocabulary: Aquaporins — highly specific channel proteins dedicated to the rapid, passive transport of water across the cell membrane [cite: 14].
- Vocabulary: Ion Channels — gated pore proteins that open or close in response to stimuli, allowing specific ions to bypass the lipid bilayer [cite: 14].
- Concept: Explain how a molecule's charge and polarity determine its ability to cross the plasma membrane via proteins.
- Concept: Describe how transport proteins facilitate the movement of ions across the membrane, potentially creating polarization.
- Vocabulary: Vocabulary: Aquaporins — Specialized channel proteins that allow for the rapid, large-scale movement of water across membranes.
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