BIOL 1201 : Bio 1201 Test 2
Document Summary
Amphipathic: hydrophobic (non polar) regions, hydrophilic (polar) regions. The fluidity of membrane of 10c species and 20c species are compared to 15c. which is more fluid: membranes adapted to 10c. Henrique and hansen 1901: changed the properties of the subcutaneous fats, had a higher melting points, membrane fluidity can acclimate, membrane fluidity adjusted by changing the ratio of unsaturated to saturated fatty acids, figure 7. 6 and 7. 8. Increases the fluidity of the membrane: figure 7. 7, figure 7. 5, figure 7. 9, figure 7. 12, figure 7. 10. What kind of molecules would pass through a membrane i. e. a phospholipid bilayer: nonpolar and small. Direction of movement: expect down the concentration gradient. Transport processes: active, against concentration gradient, requires supplied energy (atp, carrier molecule. Active transport: work must be done, energy expanded, figure 7. 20, figure 7. 18. Transport processes: passive, down concentration gradient, does not require supplied energy, diffusion (simple or facilitated)
