Polimers. Учебное пособие по подготовке к интернет-экзамену по английскому языку

19. Заполните пропуск The United Kingdom is washed by the_______Ocean.

a) Atlantic b) Pacific c) Arctic d) Indian

20. Заполните пропуск Fast food was originated in_____ .

a) Canada b) Australia c) the USA d) Great Britain

21. Заполните пропуск Canada is a parliamentary democracy and a constitutional monarchy with________as its head of state.

a) Lord-governor b) President c) Prince Albert d) Queen Elizabeth П

22. Заполните пропуск Margaret Thatcher was the leader of the______party.

a) Labour b) Social-Democratic c) Conservative d) Liberal

23. Расположите части делового письма в правильном порядке

a) Association ot Electrical Engineering 55 Lakeshore Drive Chicago I L 60603 June 11, 2007

b) Ms. Joanne Way

California Convention and Trade Center 155 Figueroa Sheet Los Angeles, CA 91335

c) Sincerely yours, JohwGwxb John Onal Events Manager

d) In our telephone conversation this morning, we discussed the upcoming convention of the Associatioi of

Electrical Engineering.

…………………………………………………………. Please call me if you need additional information. e) Dear Ms. Way:

24. Пepeд Вами конверт

(1) А& P Accountants 4563 Presley Avenue Memphis, (2) Tennessee 50647

(3) Tech Tools, Inc. (4) 3553 Johnson Avenue (5) Houston, Texas (6) TX

Соотнесите информацию под определенным номером на конверте с тем, что она обозначает

a) the state the letter comes from b) the ZIP Code in the mailing address c) the house number in the mailing address d) the town the letter is sent to e) the sender's company name f) the addressee's company name

25. Определите, к какому виду делового документа

относится представленный ниже отрывок

I am writing to apologize for the mix-up in your order. We recently began using a new packaging system, which still has a few small bugs This morning we straightened out you order and sent it. To compensate for the inconvenience, we have enclosed coupons for you to enjoy on future purchase at any of our retail stores. Again, I apologize for the confusion and any trouble this may have caused you.

a) CV b) Memo c) Contract d) Letter of apology

26. Выберите слова или сочетания слов для заполнения пропусков так, чтобы они отражали особенности оформления служебной записки

То : (1)_____ From : (2)_____, R&D Director (3)_____: the Chairman of the corporation visit Date : 28 August 2006

(4)_____of our corporation Mr. Smith is visiting our company next Monday. 4 September. He is coming to see our new laboratory. Mr. Smith will be here at 10.30 a.m. and you are all kindly requested to be at the welcome reception for him at the Conference Hall. J.T.

a) Subject b) J. Tramp c)All the staff d) The Chairman

27. Прочитайте текст

STRUCTURE OF THE COMMON АМINO ACIDS

1. The ammo acids present in proteins differ from each other in the structure of their side (R) chains. The simplest amino acid is glycine, in which R is a hydrogen atom. In a number of amino acids, R represents straight or branched carbon chains. One of these amino acids is alanine, in which R is the methyl group (CH3). Valine, leucine and isoleucine. with longer R groups, complete the alkyl side-chain series. The alkyl side chains (R groups) of these amino acids are nonpolar; this means that they have no affinity for water but some affinity for each other. Although plants can form all of the alkyl amino acids, animals can synthesise only alanine and glycine; thus valine, leucine, and isoleucine must be supplied in the diet.

2. Two amino acids, each containing three carbon atoms, are derived from alanine; they are serine and cysteine. Serine contains an alcohol group (-CH2-OH) instead of the methyl group of alanine, and cysteine contains a mercapto group (-CH2SH). Animals can synthesise serine but not cysteine or cystine.

3. Cysteine occurs in proteins predominantly in its oxidized form (oxidation in this sense meaning the removal of hydrogen atoms), called cystine. Cystine consists of two cysteine molecules linked by the disulfide bond (-S-S-) that results when a hydrogen atom is removed from the mercapto group of each of the cysteine. Disulfide bonds are important in protein structure because they allow the linkage two different parts of a protein molecule to and thus the formation of loops in - the otherwise straight chains Some proteins contain small amounts of cysteine with free sulfhydryl (-SH) groups.

4. Four amino acids, each consisting of four carbon atoms, occur in proteins; they are aspartic acid, asparagine. threonine, and methionine. Aspartic acid and asparagine, which occur in large amounts, can be synthesised by animals. Threonine and methionine cannot be synthesised and thus are essential amino acids - i.e., they must be supplied in the diet. Most proteins contain only small amounts of methionine.

Определиme, является ли утверждение: Animals can synthesise all of the alkyl amino acids.

a) ложным

b) истинным c) в тексте нет информации

28. Прочитайте текст

STRUCTURE OF THE COMMON АМINO ACIDS

1. The ammo acids present in proteins differ from each other in the structure of their side (R) chains. The simplest amino acid is glycine, in which R is a hydrogen atom. In a number of amino acids, R represents straight or branched carbon chains. One of these amino acids is alanine, in which R is the methyl group (CH3). Valine, leucine and isoleucine. with longer R groups, complete the alkyl side-chain series. The alkyl side chains (R groups) of these amino acids are nonpolar; this means that they have no affinity for water but some affinity for each other. Although plants can form all of the alkyl amino acids, animals can synthesise only alanine and glycine; thus valine, leucine, and isoleucine must be supplied in the diet.

2. Two amino acids, each containing three carbon atoms, are derived from alanine; they are serine and cysteine. Serine contains an alcohol group (-CH2-OH) instead of the methyl group of alanine, and cysteine contains a mercapto group (-CH2SH). Animals can synthesise serine but not cysteine or cystine.

3. Cysteine occurs in proteins predominantly in its oxidized form (oxidation in this sense meaning the removal of hydrogen atoms), called cystine. Cystine consists of two cysteine molecules linked by the disulfide bond (-S-S-) that results when a hydrogen atom is removed from the mercapto group of each of the cysteine. Disulfide bonds are important in protein structure because they allow the linkage two different parts of a protein molecule to and thus the formation of loops in - the otherwise straight chains Some proteins contain small amounts of cysteine with free sulfhydryl (-SH) groups.

4. Four amino acids, each consisting of four carbon atoms, occur in proteins; they are aspartic acid, asparagine. threonine, and methionine. Aspartic acid and asparagine, which occur in large amounts, can be synthesised by animals. Threonine and methionine cannot be synthesised and thus are essential amino

acids - i.e., they must be supplied in the diet. Most proteins contain only small amounts of methionine.

Oпределитe, является ли утверждение: Proteins contain four amino acids.

a) ложным b) истинным c) втексте нет информации

29. Прочитайте текст

STRUCTURE OF THE COMMON АМINO ACIDS

1. The ammo acids present in proteins differ from each other in the structure of their side (R) chains. The simplest amino acid is glycine, in which R is a hydrogen atom. In a number of amino acids, R represents straight or branched carbon chains. One of these amino acids is alanine, in which R is the methyl group (CH3). Valine, leucine and isoleucine. with longer R groups, complete the alkyl side-chain series. The alkyl side chains (R groups) of these amino acids are nonpolar; this means that they have no affinity for water but some affinity for each other. Although plants can form all of the alkyl amino acids, animals can synthesise only alanine and glycine; thus valine, leucine, and isoleucine must be supplied in the diet.

2. Two amino acids, each containing three carbon atoms, are derived from alanine; they are serine and cysteine. Serine contains an alcohol group (-CH2-OH) instead of the methyl group of alanine, and cysteine contains a mercapto group (-CH2SH). Animals can synthesise serine but not cysteine or cystine.

3. Cysteine occurs in proteins predominantly in its oxidized form (oxidation in this sense meaning the removal of hydrogen atoms), called cystine. Cystine consists of two cysteine molecules linked by the disulfide bond (-S-S-) that results when a hydrogen atom is removed from the mercapto group of each of the cysteine. Disulfide bonds are important in protein structure because they allow the linkage two different parts of a protein molecule to and thus the formation of loops in - the otherwise straight chains Some proteins contain small amounts of cysteine with free sulfhydryl (-SH) groups.

4. Four amino acids, each consisting of four carbon atoms, occur in proteins; they are aspartic acid, asparagine. threonine, and methionine. Aspartic acid and asparagine, which occur in large amounts, can be synthesised by animals. Threonine and methionine cannot be synthesised and thus are essential amino acids - i.e., they must be supplied in the diet. Most proteins contain only small amounts of methionine.

Oпределитe, является ли утверждение: Disulfide bonds allow the linkage two different parts of a protein molecule

a) ложным b) истинным c) в тексте нет информации

30. Прочитайте текст

STRUCTURE OF THE COMMON АМINO ACIDS

1. The ammo acids present in proteins differ from each other in the structure of their side (R) chains. The simplest amino acid is glycine, in which R is a hydrogen atom. In a number of amino acids, R represents straight or branched carbon chains. One of these amino acids is alanine, in which R is the methyl group (CH3). Valine, leucine and isoleucine. with longer R groups, complete the alkyl side-chain series. The alkyl side chains (R groups) of these amino acids are nonpolar; this means that they have no affinity for water but some affinity for each other. Although plants can form all of the alkyl amino acids, animals can synthesise only alanine and glycine; thus valine, leucine, and isoleucine must be supplied in the diet.

2. Two amino acids, each containing three carbon atoms, are derived from alanine; they are serine and cysteine. Serine contains an alcohol group (-CH2-OH) instead of the methyl group of alanine, and cysteine contains a mercapto group (-CH2SH). Animals can synthesise serine but not cysteine or cystine.

3. Cysteine occurs in proteins predominantly in its oxidized form (oxidation in this sense meaning the removal of hydrogen atoms), called cystine. Cystine consists of two cysteine molecules linked by the disulfide bond (-S-S-) that results when a hydrogen atom is

removed from the mercapto group of each of the cysteine. Disulfide bonds are important in protein structure because they allow the linkage two different parts of a protein molecule to and thus the formation of loops in - the otherwise straight chains Some proteins contain small amounts of cysteine with free sulfhydryl (-SH) groups.

4. Four amino acids, each consisting of four carbon atoms, occur in proteins; they are aspartic acid, asparagine. threonine, and methionine. Aspartic acid and asparagine, which occur in large amounts, can be synthesised by animals. Threonine and methionine cannot be synthesised and thus are essential amino acids - i.e., they must be supplied in the diet. Most proteins contain only small amounts of methionine.

Определите, является ли утверждение: The acidic carboxyl groups of aspartic and glutamic acids are about equal in number to the amino acids with basic side chains.

a) ложным b) истинным c) в тексте нет информации

31.Прочитайте текст

STRUCTURE OF THE COMMON АМINO ACIDS

1. The ammo acids present in proteins differ from each other in the structure of their side (R) chains. The simplest amino acid is glycine, in which R is a hydrogen atom. In a number of amino acids, R represents straight or branched carbon chains. One of these amino acids is alanine, in which R is the methyl group (CH3). Valine, leucine and isoleucine. with longer R groups, complete the alkyl side-chain series. The alkyl side chains (R groups) of these amino acids are nonpolar; this means that they have no affinity for water but some affinity for each other. Although plants can form all of the alkyl amino acids, animals can synthesise only alanine and glycine; thus valine, leucine, and isoleucine must be supplied in the diet.

2. Two amino acids, each containing three carbon atoms, are derived from alanine; they are serine and cysteine. Serine contains an alcohol group (-CH2-OH) instead of the methyl group of alanine, and cysteine contains a mercapto group (-CH2SH). Animals can synthesise serine but not cysteine or cystine.

3. Cysteine occurs in proteins predominantly in its oxidized form (oxidation in this sense meaning the removal of hydrogen atoms), called cystine. Cystine consists of two cysteine molecules linked by the disulfide bond (-S-S-) that results when a hydrogen atom is removed from the mercapto group of each of the cysteine. Disulfide bonds are important in protein structure because they allow the linkage two different parts of a protein molecule to and thus the formation of loops in - the otherwise straight chains Some proteins contain small amounts of cysteine with free sulfhydryl (-SH) groups.

4. Four amino acids, each consisting of four carbon atoms, occur in proteins; they are aspartic acid, asparagine. threonine, and methionine. Aspartic acid and asparagine, which occur in large amounts, can be synthesised by animals. Threonine and methionine cannot be synthesised and thus are essential amino acids - i.e., they must be supplied in the diet. Most proteins contain only small amounts of methionine.

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

Structures of amino acids found in proteins are different in their chains.

a) 1 b) 4 c) 3 d) 2

32.Прочитайте текст

STRUCTURE OF THE COMMON АМINO ACIDS

1. The ammo acids present in proteins differ from each other in the structure of their side (R) chains. The simplest amino acid is glycine, in which R is a hydrogen atom. In a number of amino acids, R represents straight or branched carbon chains. One of

these amino acids is alanine, in which R is the methyl group (CH3). Valine, leucine and isoleucine. with longer R groups, complete the alkyl side-chain series. The alkyl side chains (R groups) of these amino acids are nonpolar; this means that they have no affinity for water but some affinity for each other. Although plants can form all of the alkyl amino acids, animals can synthesise only alanine and glycine; thus valine, leucine, and isoleucine must be supplied in the diet.

2. Two amino acids, each containing three carbon atoms, are derived from alanine; they are serine and cysteine. Serine contains an alcohol group (-CH2-OH) instead of the methyl group of alanine, and cysteine contains a mercapto group (-CH2SH). Animals can synthesise serine but not cysteine or cystine.

3. Cysteine occurs in proteins predominantly in its oxidized form (oxidation in this sense meaning the removal of hydrogen atoms), called cystine. Cystine consists of two cysteine molecules linked by the disulfide bond (-S-S-) that results when a hydrogen atom is removed from the mercapto group of each of the cysteine. Disulfide bonds are important in protein structure because they allow the linkage two different parts of a protein molecule to and thus the formation of loops in - the otherwise straight chains Some proteins contain small amounts of cysteine with free sulfhydryl (-SH) groups.

4. Four amino acids, each consisting of four carbon atoms, occur in proteins; they are aspartic acid, asparagine. threonine, and methionine. Aspartic acid and asparagine, which occur in large amounts, can be synthesised by animals. Threonine and methionine cannot be synthesised and thus are essential amino acids - i.e., they must be supplied in the diet. Most proteins contain only small amounts of methionine.

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

Threonine and methionine should be included in the diet because they can not be synthesised.

a) 4 b) 1 c) 3