Grammar revision

Exercise 15. Make the following sentences negative:

1. Cold storage foods lose little of their nutritive qualities.

2. The process of pasterization is a splendid safeguard against milk-borne infection.

3. Canned food may be stored for long periods at the room temperature.

4. Food poisoning is most common during the summer months.

5. Milk lacks iron and other minerals essential to the diet.

6. Food preservation has now become an exact science.

Exercise 16. Translate the sentences having different forms of Participles;

1. The blood vessels located on the anterior surface of the leg were dilated.

2. The circulating volume of the blood depends on the changes in the air temperature.

3. The blood count made a week ago was normal.

4. The patient complaining of in the abdomen should be examined immediately.

5. While examing the patient the doctor noted changes in his condition.

6. The diagnosis made by the students was correct.

7. The prescribed drug was ineffective and the doctor changed the treatment.

Exercise 17. Change the sentences using the Passive voice:

1. A high concentration of salt or sugar will check the growth of many bacteria.

2. Milk may transmit infection from animals to man.

3. Special enzymes convert proteins into simple amino acids so that the body can use them.

4. Many amino acids linked together make proteins.

5. A lot of people use herbs as food.

6. Plants form the base of the natural food chain.

Exercise 18. Open the brackets using correct form of the verb. Translate the sentences:

1. The diet (to be) the daily ration of foods required by the individual.

2. A well-balanced diet (should, to contain) the foodstuffs roughly in the following proportions: 1 part protein, 1 part fat to 4 parts of carbohydrates.

3. The amount of carbohydrate required (to depend) on the energy output.

4. A man doing heavy work (to require) more carbohydrates than a sedentary worker.

5. It (to be) also essential that the food (should, to contain) cellulose. It is indigestable and therefore (to remain) in the bowels and (to stimulate) it to empty.

6. The value of foods (to calculate) by the amount of heat which they (to give) on combustion.

7. The heat (to measure) in calories.

8. The caloric value of a normal diet (should, to be) 3,000 to 3,300 calories per day.

9. The caloric value required by the individual (to affect) by age, exercise, sex, weight and build, climate and weather, temperament.

9. Put questions to the following words.

1. There are six essential foodstuffs.

2. Fuel is required to produce the energy for the body activity.

3. The vitamins and certain salts act as regulators of tissue activity.

4. The infants and children require extra building material for the process of growth.

5. We should eat less fat.

Exercise 20. Fill in prepositions where necessary

1. Glucose occurs ... many fruits and is present ... the blood ... animals.

2. Hydrogen, oxygen and nitrogen are ... the most common.

3. Some vegetable foods are very rich ... proteins.

4. The condensation ... amino acids leads ... building ... proteins.

5. Proteins are separated ... groups based chiefly ... physical properties.

6. The granules of starch can be recognized ... a microscope, … the iodine test.

7. Fructose is produced directly ... photosynthesis.