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Робота над текстом за професійним спрямуванням: BIOCHEMISTRY



The chemistry of life, or "biochemistry" as chemists call it, is an area in which the classical fields of chemistry and biology meet. It can be called, molecular biology. Biochem­istry is known to be the study of the structures and reactions of the thousands of compounds involved, in life process. It is considered to be the most complex area of chemistry.

Living things are supposed to represent the most efficient, sophisticated, compact chemical "factories" ever known. How, for example, do cells of the body know when to divide and multiply into new cells having the same characteristics as the original cells? When the body is afflicted by disease or by a wound how does the body protect itself and repair the damage? We know these processes to involve thousands of different chemical compounds.

When we compare the nervous system to man — made electronic computers the efficiency and complexity of the biological systems become even more impressive. Despite great advances in computer technology, the greatest comput­er ever built is almost insignificant being compared to a hu­man brain weighing little more than a kilogram. A computer can perform mathematical operations million of times faster than a person, but think of some of the things the nervous system can do. For example, it can cause your arm to reach out and touch an object. The brain can translate signals from the retina of the eyes into three dimensional colour images. It can translate a series of frequences detected by the ear into thoughts whereas a computer can only perform operations being programmed by a person. As to t he storage capacity the brain really wins out. f he largest computers have storage ca­pacity of about one million "words" but some experts believe the brain, to store up all the signals it receives. The chemical processes of our bodies involve enormous-
ly complex sequences of reactions details of these processes
being for from complete understanding. Nevertheless great
progress has been made in our understanding of the processes
that occur in the body.

The first half of this century might be termed the Golden Age of Physics because so many discoveries in understanding the structure of molecules, atoms and nuclei were made. By the same virtue we may be in the midst of a Golden Age in Biochemistry. The next few years of research may bring much increased understanding of chemical processes in cells.

Notes

1) sophisticated — усложненный

2) cell — клетка

3) to affect — страдать

4) retina — сетчатка

5) storage capacity — объем памяти

Виконання граматичних вправ. Present, Past and Future Perfect.

Read and translate into Ukrainian, explaining the rules about Perfect

Examples: You will have perfected your English by the time you come back from the U.S.

Will you have perfected your English by the time you come back from the U.S.?







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