chap15 - Chap 15 Biochemistry Reactions inside your cells...

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1 Chap 15 Biochemistry Reactions inside your cells – biochemistry Plants use photosynthesis- Sunlight 6CO 2 + 6H 2 O C 6 H 12 O 6 + 6O 2 Animals- Metabolism- All the reactions required to keep a cell alive. a. catabolism- degradation of molecules to provide energy. b. anabolism- process of building up or sytnesizing the molecules of a living system. 1. Carbohydrates- molecules with C,H, and O. In ratio Cx(H 2 O)y include sugars, starches, cellulose. a. Simple sugars- monosaccharides- cannot be broken down into simpler sugars. Usually cyclic structures. b. disaccharides- two sugars linked together. Sucrose + H 2 O Glucose + Fructose Lactose + H 2 O Glucose + Galactose c. Polysaccharides long chains of monosaccharides. Starch- contains 100-6000 glucose units. Alpha linkage (down) Animal starch is called glycogen. All starches are hydrolyzed to glucose during digestion
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2 Cellulose- 1800-3000 glucose units. Beta linkage (up), gives rigidity and strength to the structure. cannot be digested. 2. Fats and lipids. Lipid is a cellular constituent that is soluble in non-polar solvents and are insoluble in water. They do not have a structure class in common. a. Fat- is an ester of fatty acids and glycerol. Can have a mono, di, or triglyceride depending on the number of fatty acids.
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chap15 - Chap 15 Biochemistry Reactions inside your cells...

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