BIOCHEMISTRY

1. Biochemistry is a field of science concerned with the chemical substances and processes that occur in plants, animals, and microorganisms. Specifically, it involves the quantitative determination and structural analysis of the organic compounds that comprise the basic constituents of cells (proteins, carbohydrates, and lipids) and of those that play a key role in chemical reactions vital to life (nucleic acids, vitamins and hormones).

2. Biochemistry entails the study of all the complexly interrelated chemical changes that occur within the cell – e.g. those relating to protein synthesis, the conversion of food to energy, and the transmission of hereditary characteristics. Both the cell’s degradation of substances that release energy and buildup of complex molecules that sore energy or act as substrates or catalysts for biological chemical reactions are studied in detail by biochemists. Biochemists also study the regulatory mechanisms within the body that govern these and other processes.

3. Biochemistry lies in the border area between the biological and physical sciences. Accordingly, it makes use of many of the techniques common to physiology and those integral to analytical, organic, and physical chemistry. The field of biochemistry has become so large that many subspecialities are recognized, as, for example clinical chemistry and nutrition.

4. Molecular biology, the study of large molecules – for example, proteins, nucleic acids, and carbohydrates – that are essential to life processes is a field closely allied to biochemistry. Taken as a whole, modern biochemistry has outgrown its earlier status of an applied science and has acquired a place among the pure, or theoretical, sciences.

Определите, является ли утверждение:

Biochemistry is both an applied and theoretical science.

1) в тексте нет информации

2) истинным

3) ложным

ЗАДАНИЕ 28 (выберите один вариант ответа)

Определите, является ли утверждение:

The history of biochemistry is very long.

1) истинным

2) в тексте нет информации

3) ложным

ЗАДАНИЕ 29 (выберите один вариант ответа)

Определите, является ли утверждение:

Biochemistry nowadays is the most important science.

1) в тексте нет информации

2) ложным

3) истинным

ЗАДАНИЕ 30 (выберите один вариант ответа)

Определите, является ли утверждение:

Molecular biology is a part of biochemistry.

1) в тексте нет информации

2) ложным

3) истинным

ЗАДАНИЕ 31 (выберите один вариант ответа)

Укажите, какой части текста (1, 2, 3, 4) соответствует следующая информация:

Biochemistry has close connections with biological and physical sciences.

1) 4 2) 1

3) 2 4) 3

ЗАДАНИЕ 32 (выберите один вариант ответа)

Укажите, какой части текста (1, 2, 3, 4) соответствует следующая информация:

Nucleic acids and hormones play a key role in chemical reactions.

1) 4 2) 3

3) 1 4) 2

ЗАДАНИЕ 33 (выберите один вариант ответа)

Ответьте на вопрос:

Why do we say that biochemistry occupies the border area between the physical and biological sciences?

1) It is concerned with the study of organic compounds.

2) It uses a lot of techniques employed in physiology and chemistry.

3) It has close connections with molecular biology.

4) The subject of biochemical study is so large that its aspects are studied in a number of other disciplines.

ЗАДАНИЕ 34 (выберите один вариант ответа)

Определите основную идею текста

1) Biochemistry nowadays is a very important science.

2) The field of biochemistry is extremely large.

3) Biochemistry is closely connected with many other sciences.

4) Biochemistry has a number of subspecialities.

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