4. Answer the following questions.
(a) What are nutrients?
(b) What is protective food?
(c) What is a balanced diet?
(d) Mention any three good eating habits.
(e) Explain the functions of the four different types of teeth.
Answers
Answer:
a. Nutrients are compounds in foods essential to life and health, providing us with energy, the building blocks for repair and growth and substances necessary to regulate chemical processes. There are six major nutrients: Carbohydrates (CHO), Lipids (fats), Proteins, Vitamins, Minerals, Water.
b. foods that contain adequate amounts of vitamins, minerals, and high quality proteins and protect against diseases are known as protective food.
c. A balanced diet is a diet that contains differing kinds of foods in certain quantities and proportions so that the requirement for calories, proteins, minerals, vitamins and alternative nutrients is adequate and a small provision is reserved for additional nutrients to endure the short length of leanness.
d. (i) Eat a variety of vegetables, especially dark green, red, and orange vegetables.
(ii) Eat a variety of fruits.Eat whole-grain, high-fiber breads and cereals.Reduce or eliminate refined or processed carbohydrates;
(iii) Drink fat-free or low-fat milk and eat low-fat dairy products.
e. Incisors are the teeth that you use to bite into your food. Canines are your sharpest teeth, used for tearing apart food.Premolars are used for tearing and crushing food. Your molars are your largest teeth. Their function is similar to that of the premolars, to grind, tear, and crush food.