Збекистон республикаси олий ва ўрта махсус таълим вазирлиги

Exercise 5. Translate the text into Uzbek and then back into English, compare your version with the original:
In science one of the most important discoveries having a great influence on the development of science was the fact that microscope has come into common use among scientists. The microscope gave scientists new power. Now they could see things that had been hidden. The first microscopes were very simple. They had only single lenses, some had double lenses with a tube between them. Anton von Leeuwenhoek was the first man who penetrated through these lenses into the mysterious world of the microbe. No one before his time had guessed that such tiny organisms existed.
Exercise 6. Learn the new words of the text “The study of Microbiology”

derive v -	kelib chiqmoq
unaided adj -	yordamga muhtojsiz
algae n -	dengiz o’simligi
fungi n -	qo’ziqorin
indispensable adj -	kerakli, majburiy
terrestrial n -	er sathi
spontaneously adv-	hohish bilan

Exercise 7. Read the text, translate it and answer the following questions:
The study of Microbiology

Microbiology often has been defined as the study of organisms and agents too small to be seen clearly by the unaided eye, that is, the study of microorganisms. Because objects less than about one millimeter in diameter cannot be clearly seen and must examined with a microscope.

Microorganisms are extraordinary variety organisms- viruses, bacteria, algae and fungi. A microbiologist usually first isolates a specific microorganisms from a population and then cultures it. Thus, microbiology employs techniques- such as sterilization and the use of culture media- that are necessary for successful isolation and growth of microorganisms.
Microorganisms are indispensable components of our ecosystem. They make possible the carbon, oxygen, nitrogen, sulfur cycles that take play in terrestrial and aquatic systems. Microorganisms are not spontaneously generated from other microorganisms. Of course, many microorganisms result of human, animal and plant diseases. The first person to observe and describe microorganisms was the amateur microscopist Antony van Leeuwenhoek (1623-1723). The microbiologist L. Pasteur, R. Koch, J. Lister made much contribution to microbiology. Society benefits from microorganisms in many ways. They are necessary for the production of bread, cheese, beer, antibiotics, vaccines, vitamin, enzymes. The future of microbiology is bright.