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Wednesday, March 31, 2010

CARBOHYDRATES!
Definition:
Carbohydrates provide body cells with the energy they need.
Carbohydrates are:
Polysaccharide- Starch, Cellulose, glycogen
Disaccharides- Maltose, sucrose, lactose
Monosaccharide- Galactose, fructose and glucose
Fun facts!
Excess carbohydrates in our body are turned into fats and glycogen. Glycogen is stored in the liver and the muscles. The fats are stored in the adipose cells underneth the skin. Fats are used for providing energy only if carbohydrate intake is low.
Equation:
Starch ----------------------> Maltose ------------>Glucose
(salivary amylase) (Maltase)
Made up of....
-Carbohydrates
-Hydrogen
-Oxygen
PROTEINS!!
Definition:
Proteins are the main substances used for the growth for new cells and the repair of damaged tissues. They provide energy when the body lacks carbohydrates and fats. Excess protein cannot be stored. It is toxic. It is removed mainly as urea in urine and in faeces.
Made up of...
- Carbon
- Hydrogen
- Oxygen
- Nitrogen
Equation:
Protein ------------> Amino acids
(Protease)
FATS!!!
Definition:
Fats are important sources and storage of energy that can provide twice as much energy as carbohydrates.
Made up of....
-Carbohydrates
-Hydrogen
-Oxygen
Equation:
Fats ---------> fatty droplets ------------> 3 fatty acids + 1 glycerol
(bile) (lipase)

I AM GRUMPY.
8:16 PM


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      Class: 1-2b '09 , 2-2 '10

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