Food and Digestion: Lipids and Proteins
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Questions and Answers

What structural component do lipids consist of?

  • A molecule of glycerol and three fatty acids (correct)
  • Multiple chains of sugars
  • A molecule of glucose and two fatty acids
  • A single chain of amino acids
  • Which of the following is NOT a function of proteins?

  • Growth and repair of tissues
  • Enzymes
  • Energy storage (correct)
  • Structural support
  • Which mineral is primarily associated with the formation of hemoglobin in red blood cells?

  • Iron (correct)
  • Magnesium
  • Calcium
  • Sodium
  • What is a common symptom of Kwashiorkor?

    <p>Swelling in the belly</p> Signup and view all the answers

    Which food is NOT a recommended source of lipids?

    <p>White bread</p> Signup and view all the answers

    How many essential amino acids must humans consume?

    <p>10</p> Signup and view all the answers

    Which of the following is a health concern associated with cholesterol?

    <p>Heart disease</p> Signup and view all the answers

    Which mineral is known for its role in muscle function and is found in green vegetables?

    <p>Magnesium</p> Signup and view all the answers

    Study Notes

    Food and Digestion

    • Lipids are fats, either solid or liquid at room temperature
    • Plant lipids are usually liquid and called oils
    • Animal lipids are usually solid and called fats
    • Lipids are made of glycerol and fatty acids
    • Lipids store energy, insulate the body, and protect organs

    Lipids

    • Lipids make up about 10% of the body's mass
    • Lipids are a long-term energy store
    • Fat acts as insulation, reducing heat loss
    • Fat around organs protects them from damage
    • Saturated fats are more common in animal products
    • Unsaturated fats are more common in plant oils
    • Saturated fats are less healthy than unsaturated fats

    Proteins

    • Proteins are polymers made of amino acids
    • Proteins are essential for growth and repair
    • Proteins can be enzymes or structural components
    • Proteins are about 18% of the body's mass
    • Protein deficiency can lead to kwashiorkor
    • Recommended daily protein intake is about 70g
    • Essential amino acids must be obtained from food

    Minerals

    • Minerals are chemical elements needed by the body
    • Minerals are in our food as mineral ions
    • Minerals are used for a variety of bodily functions, including bone growth
    • Minerals required by the body in large amounts include calcium and phosphorus
    • Minerals required by the body in smaller amounts include sodium, chlorine, magnesium, and iron
    • Calcium and phosphorus build teeth and bones
    • Sodium and Chlorine are found in body fluids
    • Magnesium makes bones and is part of cells
    • Iron is part of haemoglobin, carrying oxygen

    Essential Amino Acids

    • 10 amino acids are essential amino acids
    • Essential amino acids must be obtained from food
    • Meat, fish, eggs, and dairy products have high amounts of essential amino acids
    • Vegetarians can obtain essential amino acids from plant products

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    Description

    Explore the fundamentals of food and digestion with a focus on lipids and proteins. This quiz covers the structure, function, and importance of these macromolecules in the body. Test your knowledge on fats, oils, and the role of proteins in nutrition.

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