Table of Foodstuffs, showing their Uses.

Body Builders	Fuel Foods	Regulators
Proteins	Carbohydrates	Vitamins
Water	Fats	Salts
Salts	Proteins

To be of use to the body these foodstuffs must be digested and absorbed. Food must therefore be of such a nature that it can be digested— i.e., broken down by digestive juices into substances that can pass into the blood stream, and be carried to the various tissues for their use. Proteins, carbohydrates and fats are complicated compounds found in plant and animal matter, and require digestion. Water and mineral salts are simple inorganic substances; they can be absorbed, therefore, without digestion, they enter into the composition of all animal and plant matter. In fact, all living matter consists largely of water. The inorganic salts, absorbed from the soil or water, are built up by living things into organic salts.

Healthy food is food considered to be beneficial to health.

The goal of healthy eating is to develop a diet that you can maintain for life, not just a few weeks or months.

Finally, there are three main messages to follow for healthy eating: First, we should eat less fat, particularly saturated fat. Secondly, we are to cut down on sugar and salt. Thirdly, we must eat more fresh fruit and vegetables.

POST-TEXT ASSIGNMENTS:

Exercise 8. Answer the questions:

1. What is our food made up of?

2. What are the main functions of the food substances?

3. How many essential foodstuffs are there that are supplied through the foods?

4. What substances are used as body builders?

5. What substances are used as fuel foods?

6. What substances are used as regulators of body activity?

7. What are three main rules for healthy eating?

Exercise 9. Exclude the unnecessary word from the logical sequence:

1. a) protein b) fat c) carbohydrate d) hemoglobin

2. a) heat b) warmth c) coolness d) refrigeration

3. a) blood b) lymph c) oil d) gastric juice

4. a) water b) hydrogen c) oxygen d) carbon dioxide

Exercise 10. Give English equivalents of the following word combinations:

Здорове харчування; складні сполуки; нова тканина; насичені жири; процес росту; постачання палива; діяльність усіх живих істот; поживні речовини; проста, неорганічна речовина; відновлення тканини; будівельний матеріал; необхідні продукти харчування

Exercise 11.Read and translate the information given below. Be ready to use it in the story of your own.

Сarbohydrate is any one of a large group of compounds, including the sugars and starch that contain carbon, hydrogen, and oxygen. Carbohydrates are important as a source of energy: they are manufactured by plants and obtained by animals and man from the diet, being one of the three main constituents of food. All carbohydrates are eventually broken down in the body to the simple sugar glucose, which can then take part in energy-producing metabolic processes. Excess carbohydrate, not immediately required by the body, is stored in the liver and muscles in the form of glycogen. In plants carbohydrates are important structural materials (e.g. cellulose) and storage products (commonly in the form of starch).

Fat isa substance that contains one or more fatty acids (in the form of triglycerides) and is the principal form in which energy is stored by the body (in adipose tissue). It also serves as an insulating material beneath the skin (in the subcutaneous tissue) and around certain organs (including the kidneys). Fat is one of the three main constituents of food; it is necessary in the diet to provide an adequate supply of essential fatty acids and for the efficient absorption of fat-soluble vitamins from the intestine. Excessive deposition of fat in the body leads to 'obesity.

Protein isone of a group of organic compounds of carbon, hydrogen, oxygen, and nitrogen (sulphur and phosphorus may also be present). The protein molecule is a complex structure made up of one or more chains of 'amino acids, which are linked by peptide bonds. Proteins are essential constituents of the body; they form the structural material of muscles, tissues, organs, etc., and are equally important as regulators of function, as enzymes and hormones. Proteins are synthesized in the body from their constituent amino acids, which are obtained from the digestion of protein in the diet. Excess protein, not required by the body, can be converted into glucose and used as an energy source.

Дата добавления: 2015-10-21