Study Notes
Human nutrition involves acquiring food and utilizing it for energy, growth, repair, and other metabolic functions.
- Carbohydrates — provide energy. Example: Found in potatoes, bread, and rice.
- Proteins — build and repair tissues. Example: Found in meat, fish, and beans.
- Fats — store energy and insulate the body. Example: Found in oils, butter, and nuts.
- Vitamins — support various bodily functions. Example: Vitamin C in citrus fruits helps with tissue repair.
- Minerals — support structural functions. Example: Calcium in dairy products is essential for bones.
Exam Tips
Key Definitions to Remember
- Balanced diet: A diet containing all nutrients in correct proportions.
- Peristalsis: Muscular contractions that move food through the alimentary canal.
Common Confusions
- Not all fats are bad; they are essential for energy storage and insulation.
- Vitamins and minerals are needed in small amounts but are crucial for health.
Typical Exam Questions
- What is the function of dietary fiber in the digestive system? Aid in peristalsis and prevent constipation.
- Which nutrient is primarily responsible for providing quick energy? Carbohydrates.
- Why is it important for the diet to contain all five essential nutrients? To provide balanced nutrition for growth, energy, and repair.
What Examiners Usually Test
- Understanding of nutrient functions and sources.
- The process of digestion and absorption in the human body.
- The role of enzymes in chemical digestion.