Explanation of nutrition terms:

1. Nutrition: the biological process by which the human body ingests, digests, absorbs and utilizes nutrients in food to meet the body's physiological needs.

2. Nutrients: refers to chemical components in food that can provide energy, body composition, tissue repair, and physiological regulation functions to the human body.

3. Nutrition: The study of the physiological effects and beneficial effects of nutrients and other biologically active substances in food on human health.

4. Basal metabolism: refers to the minimum energy consumption to maintain life, that is, the energy consumption of the human body while lying still and awake after fasting for 12 hours under quiet and constant temperature conditions.

5. Macronutrients: Larger intakes of protein, fat and carbohydrates are both macronutrients.