BISC 101 Study Guide - Midterm Guide: Facilitated Diffusion, Passive Transport, Active Transport
29 Oct 2018
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Provide structure, cell to cell signaling, recognition, blood cell type: describe 3 functions of membrane proteins. Channel for transportation, receptors (relay signals inside to outside of cell), enzymes (speed up rxns: describe 3 types of passive transport across the cell membrane. Facilitated diffusion (eg. water), simple diffusion (eg. gases), osmosis (water goes low to high sol. Conc. : distinguish between the terms isotonic, hypertonic and hypotonic. Of solutes same inside and outside of cell. Of solutes higher inside the cell: describe how a proton pump can be involved in co-transport. H+ is pumped outside of cell with atp. The change cause the protein to change shape, releasing na outside the cell. Facilitated diffusion brings across small, non-polar molecules in and out the cell without the use of atp, goes with conc. Gradient co-transport utilizes atp and can bring across charged molecules out, and back in along with another molecule.
