Английский язык для медиков | страница 3

Cells are characterized Ьуг high degree of complexity and order in both structure and function. The cell contains a number.

Of structures called cell organelles. These are responsible for carrying out the specialized biochemical reactions characterizing each. The many chemical reactions taking place in a cell require the establishment of varied chemical microenvironment.

Carefully controlled transport mechanisms along with highly effective barriers – the cell membranes – ensure that chemicals are present in the proper region of the call in appropriate concentration.

The cell membranes of a mixture of protein and lipid form its surroundings.

Membranes are an essential component of almost all cells organel-les. The membrane allows only certain molecules to pass through it.

The most visible and essential organelle in a cell is the nucleus, containing genetic material and regulating the activities of the entire cell.

The area outside of the molecules is called the cytoplasm. Cytoplasm contains a variety of organelles that have different functions.

New words

cell – клетка

independent – независимый

unit – единица

body – тело

all – все

life – жизнь

human – человеческий

together – вместе

tissue – ткань

organ systems – системы органов

to function – функционировать

to contain – содержать

membranes – мембраны

protein – протеин

nucleus – ядро

cytoplasm – цитоплазм

different – различный

Спряжение глагола to be в Present Simple.

To be – быть, находиться, являться. После следующих местоимений он меняет свою форму.

Спряжение глагола to be в Present Simple Таблица 1

For example.

1. I am a pupil. I am not a pupil. Am I a pupil?

2. She is a girl. She is not a girl. Is she a girl?

3. You are a good friend. You are not a good friend. Are you a good friend?

Поставьте глагол to be в правильную форму, заполнив пропуски.

1. I… a pupil.

2. My father. not a teacher, he… a scientist.

3.. your sister a teacher?

4. Mary. a painter.

5.. they at home?

6. My father. a worker.

7. She. at work.

8.. you a doctor?

9. He… a pilot.

10. We… students.

11. They… carpenters.

12… they at home?

13. they… not at home.

14. He… at work.

15… your sister a typist?

16… your brother at school?

17… your sister in the cabinet?

18. My sister… at home.

19… this your cat?

20. She… an actress.

21. This… my bag.

22. He… professor.

23. Helen… a singer.

24… you an engineer?

25. He… Russian.

Переведите на английский язык, употребляя глагол to be в Present Simple.

1. Я ученик. Я в школе.