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Biology {Biomolecules, Balanced Diet and Digestive System Summer} :beach…
Biology {Biomolecules, Balanced Diet and Digestive System Summer} :beach_with_umbrella:
Biomolecules
Proteins- Carbon, Hydrogen Oxygen, Nitrogen. Larger Insoluble Molecules: protein Smaller Soluble Molecules: amino acids
Lipids (fats and oils)- Carbon, Hydrogen, Oxygen. Larger Insoluble Molecules: lipids Smaller Soluble Molecules: 1 glycerol and 3 fatty acids
Carbohydrates- Carbon, Hydrogen, Oxygen. Larger Insoluble Molecules: starch, glycogen Smaller Soluble Molecules: glucose
Balanced Diet
Water - chemical reactions, prevent dehydration (chapped lips, lethargy, hallucinations, urine weakness)
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Lipids insulation, protection of organs, energy store
Vitamins- Vitamin A, C, & D VA- night vision (carrots, green veg) VC- prevents scurvy (citrus fruits, green veg) VD- prevents rickets (sunlight, oily fish)
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Minerals- Iron, and Calcium Iron- needed to make haemoglobin to transport oxygen (red meat, spinach) Calcium- strong bones (milk, cheese, eggs)
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Tests for Biomolecules
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Safety Wear safety glasses/gloves, tie hair, lab coat, (tongs glucose), ethanol is flammable
Equipment bunsen burner, pipette, test tubes
Sources of Error Colour change of Benedict’s test and Biuret test may be subtle and difficult to judge if the
concentration of the tested molecule is low.
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