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Lecture 3

BIOL 1410 Lecture Notes - Lecture 3: Monoglyceride, Deoxyribose, CholesterolPremium


Department
Biological Sciences
Course Code
BIOL 1410
Professor
All
Lecture
3

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BIOL 1410: Anatomy of the Human Body - Lecture 3: The Chemical Level of Organization
The Chemical Level of Organization
F) Important Organic Substances
1) Carbohydrates
consist of the elements C,H, and O
Functions:
a) Source of energy for cells
e.g. C6H12O6 (glucose)
b) Creates cell structures
e.g. DNA + RNA
Types:
a) monosaccharides
Basic building blocks of other types of carbohydrates
e.g. glucose, fructose, ribose, deoxyribose
b) disaccharides
2 monosaccharides that are covalently bonded
e.g. glucose + fructose à sucrose
c) polysaccharides
many monosaccharides bonded together
e.g. glycogen (animals), starch (plants)
2) Lipids
C, H, O (in a different ratio from carbohydrates)
fats, oils, fatty acids
Insoluble in water hydrophobic
Functions:
a) protect organs (sort of like a padding)
b) cell membranes
c) source of stored energy
Types:
a) Glycerides
most common lipid in body + diet
composed of 2 building blocks:
i. glycerol (backbone)
ii. fatty acids (FAs)  3 fatty acids maximum on glycerol
backbone
naming:
i. monoglyceride  glycerol + 1 FA
ii. diglyceride  glycerol + 2 FAs
iii. triglyceride  glycerol + 3 FAs
b) Phospholipids
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