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Chapter 6 Lipids Bio
| Question | Answer |
|---|---|
| three types of lipids | fats, steroids, phospholipids |
| fats are made up of | 3 fatty acids and glycerol |
| are fats polymers | no |
| what links glycerol and fatty acids in fats | ester linkages |
| steroids are made up of | 4 tings, a tail, and an R-group |
| steroids are aka | cholesterol |
| phospholipids are made up of | glycerol, 2 tails, polar head |
| ring structure fatty acids make in water | micelles |
| saturated fat | hydrocarbon chains without double bonds |
| oil is | unsaturated |
| wax is | saturated |
| unsaturated fat | hydrocarbonds with double bonds |
| how are lipids charazterized | insolubility in water |
| lipids bilayers are highly | selective |
| lipid bilayers with unsaturated hydrocarbon tails make | higher permeability and fluidity |
| as temperature decreases, permiability | decreases |
| how quickly molecules move within and across membranes is due to | temperature, structure of hydrocarbon tails, and number of cholesterol molecules in bilayer |
| protocells | vesicle like strucures that harbor nucleic acids |
| who made up fluid mosaic model | singer and nicolson |
| name for proteins on exterior surface | peripheral membrane proteins |
| two names for proteins on inside of bilayer | integral and transmembrane proteins |
| detergent molecule | small amphipathic molecule |
| ions pass membranes through | ion channels |
| protein that lets particular ion to pass | channel protein |
| channels that let water pass | aquaporins |
| gated channels | they open or close due to a signal |
| passive transport is powered by | diffusion and electrochemical gradient |
| channel proteins and carrier proteins are responsible for | facilitated diffusion |
| carrier protein | changes shape during transport |
| what moves glucose across membrane | GLUT-1 |
| active transport | moving substances again concentration gradient |
| ATP gives up what to a what | phosphate to a pump |
| sodium potassium pump is an example of | active transport |
| how many Na leave cell | 3 |
| how many K enter cell | 2 |
| Na and K represent | stored energy |
Created by:
kbaalman
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