There are six classes of nutrients that serve three general functions: - >(1) to provide energy, answer(2) to regulate body processes, (3) to contribute to cellular and body structure What is the difference between food and nutrients? - answer>Food provides energy in terms of calories, while nutrients are substances found in food that provide the materials for building and maintaining our bodies and regulating of key metabolic processes that sustain life. Nutrition by definition is the science that What is nutrition? - answer>links foods to health and disease. When considering one's health, five dimensions can be evaluated: physical health, intellectual health, emotional health, social health, and physical health - body's ability to perform spiritual health. - answer>daily functions for survival the cognitive ability to learn and adaptintellectual health - the ability to express or suppress emotionemotional health -ability to interact with others social health - - purpose for human existence, cultural practicesspiritual health What two motives drive people to eat certain foods? (it isn't nutritional taste and texture value) - answer> substances in food Nutrients - answer> hunger 2) appetiteWhy do we get hungry? - answer>1) internal drive often experienced as a negative hunger - answer>sensation such as churning, growling,