Biological molecules
- Created by: MaisyAbel
- Created on: 25-10-15 08:33
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- Biological molecules
- chemical elements
- all biological molecules contain CARBON, HYDROGEN, OXYGEN.
- so carbohydrates and lipids just contain this
- however proteins also contain SULPHUR, NITROGEN, (PHOSPOROUS)
- so carbohydrates and lipids just contain this
- all biological molecules contain CARBON, HYDROGEN, OXYGEN.
- molecule structure
- they are all large (complex) molecules made up from smaller basic units (molecules):
- (carbohydrates) starch and glycogen from simple sugar (glucose)
- protein from amino acid
- lipid from fatty acids and glycerol
- they are all large (complex) molecules made up from smaller basic units (molecules):
- tests
- test for glucose: heat substance with Benedict's Solution. Goes from green solution to orange/red precipitate if glucose is present.
- test for starch: add iodine to substance that is being tested. Goes from brown to blue/black if starch is present.
- enzymes are biological catalysts in metabolic reactions
- CATALYST: speeds up the rate of a chemical reaction without being used up.
- METABOLIC: chemical reactions that take place in the body.
- SO basically: enzymes speed up the rate of chemical reactions
- ( Enzymes are produced by cells. their function is to convert substances into products. they are proteins. they can be recycled).
- the active site in an enzyme. How changes in Ph cause changes to the enzyme. How enzyme activity can be affected by changes in temperature.
- info on separate page
- chemical elements
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