Nutrition
Nutrition is the process of obtaining food necessary for health and growth. It involves the intake of food, digestion, absorption, and utilization of nutrients by the body.
Key Concepts
- Nutrients: Substances in food that provide energy and materials for the body to function.
- Macronutrients: Nutrients required in large amounts, including carbohydrates, proteins, and fats.
- Micronutrients: Nutrients required in smaller amounts, including vitamins and minerals.
- Digestion: The process of breaking down food into smaller molecules that can be absorbed by the body.
- Metabolism: The chemical processes in the body that convert food into energy and building materials.
- Calories: Units of energy derived from food.
Study Guide
- What are the main nutrients required by the body?
- Explain the difference between macronutrients and micronutrients.
- Describe the process of digestion and absorption of food in the body.
- How does the body use nutrients for energy and growth?
- What are calories and how are they related to nutrition?
Understanding nutrition is essential for maintaining a healthy lifestyle. By learning about the different nutrients and their role in the body, individuals can make informed decisions about their diet and overall well-being.
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LIFE SCIENCE
Ecosystems: Interactions, Energy, and Dynamics
Use evidence and scientific reasoning to explain how characteristic animal behaviors (e.g., building nests to protect young from cold, herding to protect young from predators, attracting mates for breeding by producing special sounds and displaying colorful plumage, transferring pollen or seeds to create conditions for seed germination and growth) and specialized plant structures (e.g., flower brightness, nectar, and odor attracting birds that transfer pollen; hard outer shells on seeds providing protection prior to germination) affect the probability of successful reproduction of both animals and plants.