I. Find the translation in Uzbek and Russian of given words

I.Find the translation in Uzbek and Russian of given words.

sabab bo’lmoq, tarkibiy qism, rodopsin, yopishqoq, yasama, ko’z pardasi, tozalangan, yetishmovchilik, tushunmoq, havfga qo’ymoq, moddalar almashuvi, ferment, ko’z parda, o’ta muhim, isomer, linza, turtki, son

нехватка, причиняет, фермент, составнаячасть, изомер, квантовое число,сетчатка, линза, липкий, очищенный, оставлять опасности, родопсин, толчок, сетчатая оболочка, понимать, производный, совершенно необходимый

English	Uzbek	Russian
indispensable	O’ta muhim	Совершенно необходимый
purified	tozalangan	очищенный
constituent	tarkibiy qism	составнаячасть
enzyme	ferment	фермент
cause	sabab bo’lmoq	причиняет
metabolic	Moddalar almashinuvi	Обмен веществ
retinоl	ko’z pardasi	сетчатка
lack (of)	yetishmovchilik	нехватка
Viscous	yopishqoq	липкий
Derivative	yasama	производный
Rhodopsin	rodopsin	родопсин
Retinene	^iretinen	ретинен
Impulse	Turtki	толчок
Perceive	tushunmoq	понимать
Quantum	Son	квантовое число
Expose	Havfga qo’ymoq	Подвергать опасности
Lens	Linza	линза
Isomerase	Isomer	изомер

II. Answer these questions in English.

1. How many vitamins are known ? 13

2. What role do the vitamins play in the organism? Without them organism can not develop

3. Are proteins fats, water, mineral salts indispensable components of food ?yes

4. What experiment was carried out by the Russian scientist Lunin in 1881 ?artificial

5. How is “artificial” milk prepared ?by mixing purified proteins,fats,carbohydrates and mineral salts in the same proportions they are in natural milk

6. What was happened in the experiment with the mice ? all the animak died

7. Who established the word “vitamin” in chemistry ?C.Funk

8. What was C. Funk in Poland ?Biochemist

9. What is the visual pigment hodopsin ?vitamin A,called retinene

10. Why is the fish-liver oil necessary for organism?Becauese they rich in vitamins A and D

IV. Put prepositions where necessary !
1. Dozen of vitamins and their structures are now known.

2. A living organism cannot synthesize vitamins by itself.

3. We shall consider the vitamins in the alphabetical order.

4. Then, cis-retinene immediately transforms into trans-retinene.

5. After the cis-retinol is oxidized to cis-retinene the eye is ready to “photograph” the next picture.

6. Vitamin A is contained in fishliver oil.

7. The history of vitamins goes back to the end of the last century

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