Summary
Nutrients are molecules in food essential for energy, growth, development, and reproduction. They are digested and broken down into basic parts for use by organisms. There are two main types of nutrients: macronutrients and micronutrients.
- Carbohydrates — organic compounds made of carbon, hydrogen, and oxygen, primarily providing energy. Example: Glucose is a monosaccharide that is a reducing sugar.
- Proteins — composed of amino acids, essential for growth, repair, and enzyme production. Example: Hemoglobin is a protein that carries oxygen in the blood.
- Lipids (Fats & Oils) — made of glycerol and fatty acids, important for energy storage and insulation. Example: Triglycerides are a type of fat stored in the body.
- Vitamins — organic compounds required in small amounts for various bodily functions. Example: Vitamin C is necessary for wound healing.
- Minerals — inorganic elements needed for body processes and structure. Example: Calcium is essential for bone health.
Exam Tips
Key Definitions to Remember
- Carbohydrates: Organic compounds providing energy.
- Proteins: Molecules made of amino acids for growth and repair.
- Lipids: Fats and oils used for energy storage and insulation.
- Vitamins: Organic compounds needed in small amounts for health.
- Minerals: Inorganic elements essential for body functions.
Common Confusions
- Confusing macronutrients with micronutrients.
- Misunderstanding the role of vitamins and minerals.
Typical Exam Questions
- What is the main function of carbohydrates? Provide energy.
- How are proteins used in the body? For growth, repair, and enzyme production.
- What is the role of lipids in the body? Energy storage and insulation.
What Examiners Usually Test
- Understanding of nutrient functions.
- Ability to identify examples of each nutrient type.
- Knowledge of food tests for different nutrients.
