Biological Molecules
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What you'll learn
What carbohydrates, fats, and proteins are made of and what they do in the body, how food tests identify them, and how enzymes speed up reactions.
- Carbohydrates, fats and proteins are built from different elements
- Each nutrient group has its main biological role
- Large molecules are built by joining many small repeating units
- Food tests: iodine test for starch
- Food tests: Benedict's test for reducing sugars
- Food tests: biuret test for protein
- Food tests: emulsion test for fats
- Enzymes speed up reactions by lowering the energy needed to start them
- Temperature and pH change an enzyme's rate by changing its shape