4. Biological Molecules
- Created by: Alicegreenleaf
- Created on: 17-04-17 12:02
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Notes on Biological Molecules:
- Carbohydrates contain carbon, hydrogen and oxygen
- Fats contain carbon, hydrogen and oxygen
- Proteins contain carbon, hydrogen, oxygen and nitrogen (and sometimes sulphur)
Large molecules are made from smaller molecules
- Starch and glycogen are made from glucose
- Cellulose is made from glucose
- Proteins are made from amino acids
- Fats and oils are made from fatty acids and glycerol
You can test for the presence of these molecules
- Iodine solution tests for starch (brown to dark blue)
- Benedict’s solution tests for reducing sugars (blue to red through a spectrum based on how much is present i.e. blue indicates none, green a trace, yellow a low amount, orange a moderate amount and red a…
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