Lipids
- Created by: Natasha Mirchandani
- Created on: 04-11-12 14:13
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- Lipids
- store energy
- form cell membranes
- transmit chemical messages
- hydrophobic
- made of carbon + hydrogen
- include: fats, oils, waxes, phospolipids + steroids
- organic molecules
- don't mix with water to form a solution
- hydrocarbons
- tail non polar
- long tail of molecules has no charge
- head polar
- attracted to polar molecules in water
- attracted to polar molecules in water
- fats + oils
- energy storage lipids
- fat is lighter than carbs + has twice as much chemical energy
- store their energy in C + H bonds
- triglycerides
- small glycerol molecules + 3 small fatty acid
- fatty acids : long chain of C + H
- small glycerol molecules + 3 small fatty acid
- fats are solid at room temp. oils are liquid at room temp.
- saturated fats
- single bond between C atoms
- sound in animals we eat
- if eaten too much, may lead to heart disease
- unsaturated fats
- double bonds between C atoms
- found in plants we eat
- Phospholipids
- form cell membranes
- help maintain homeostasis
- contain 2 small fatty acids (similar to fats)
- has a structure called phosphate groups
- gives the phospholipid a negative charge making it hydrophilic
- steroids
- chemical messengers
- carbon rings
- waxes
- repel water
- hydrophobic
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