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SS1: BIOLOGY - 2ND TERM

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  1. Cellular Respiration | Week 1
    5 Topics
    |
    1 Quiz
  2. Excretion & Growth in Living Cells | Week 2
    4 Topics
    |
    1 Quiz
  3. Irritability | Week 3
    6 Topics
    |
    1 Quiz
  4. Reproduction of Organisms | Week 4
    5 Topics
    |
    1 Quiz
  5. Tissues and Supporting Systems | Week 5
    6 Topics
    |
    1 Quiz
  6. Animal Nutrition | Week 6
    6 Topics
    |
    1 Quiz
  7. Enzymes | Week 7
    1 Topic
    |
    1 Quiz
  8. Heterotrophic Nutrition | Week 8
    3 Topics
    |
    1 Quiz
  9. The Mammalian Dentition | Week 9
    3 Topics
    |
    1 Quiz
  10. Basic Ecological Concepts | Week 10
    3 Topics
    |
    1 Quiz
  11. Local Biotic Communities | Week 11
    4 Topics
    |
    1 Quiz
  12. Major Biomes of the World | Week 12
    5 Topics
    |
    1 Quiz



Lesson 6, Topic 3
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Lipids (Fats and Oil) & Protein

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Topic Content:

  • Lipids (Fats and Oil)
  • Uses of Fat
  • Proteins
  • Uses of Protein

Lipids (Fats and Oil):

Lipids consist of carbon, hydrogen, and oxygen atoms only. The proportion of hydrogen and oxygen atoms in lipids is less than that in carbohydrates. Fats are solid while oil is liquid at room temperature.

Before lipids can be absorbed into the body, they must be broken down. The enzyme lipase breaks down fats into fatty acids (carboxylic acids) and glycerol, which is facilitated by bile in the liver.

Uses of Fat:

1. Fats serve as insulators especially when stored under the skin to prevent heat loss.

 

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