BIOL 1201 Study Guide - Moodle, Oxidative Phosphorylation, Thermodynamics
Document Summary
Membranes and membrane function (chapter 7 of the textbook) Mosaic of proteins drifting laterally and fluid bilayer phospholipids. Henrique and hanson performed experiments with pigs and examined the effects on the relative amounts of saturated and unsaturated fats. Membrane fluidity can acclimate to temp pigs had subcutaneous fats with higher melting point one can see similar patterns comparing species with different body temperature or cells grown at different culture temperatures. What types of molecules can move easily across the membrane? (e. g. polar, nonpolar, large, small) nonpolar water gases steroid hormones. Down concentration gradient depends on molecular movement does not no require supplied energy does not used carrier molecules. What is facilitated diffusion ? down concentration gradient depends on molecular movement does not require supplied energy employs a carrier molecule. When equilibrium is reached in diffusion : does movement of molecules stop? no does net movement of molecules stop? yes.
