3) Polysaccharides : complex sugar, many carbon rings (10s to 100s)
Examples:
2. Lipids
Lipids comprise 18-25% of body weight and consist primarily of Carbon and Hydrogen , as well as some Oxygen . They are hydrophobic.
Functions : insulation, protection & energy storage.
1. Triglycerides: (fats and oils)
The body’s most highly concentrated form of chemical energy. Capacity to store triglycerides in adipose (fat) is unlimited. •
Excess dietary carbs, fats, oils are all
deposited in adipose tissue as triglycerides. •
Structure: single glycerol head with three
fatty acid (FA) molecules.
2. Phospholipids:
Major component of cell membranes; high
concentrations in nervous system (NS). Structure: glycerol, two FA chains attached to the first two carbons, with a phosphate group linked nitrogen to the third carbon
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