Analysis of a hexapeptide using enzymatic cleavage reveals the following result: • Amino acid composition of the peptide is: 2R, A, V, S, Y • Trypsin digestion yields two fragments and the compositions are: (R, A, V) and (R, S, Y) • Chymotrypsin digestion yields two fragments and the compositions are: (A, R, V, Y) and (R, S) • Digestion with carboxypeptidase A yields no cleavage product. Given: Trypsin cleaves at carboxyl side of R. Chymotrypsin cleaves at carboxyl side of Y. Carboxypeptidase A cleaves at amino side of the C-terminal amino acid (except R and K) of the peptide. The correct amino acid sequence of the peptide is:

Consider the following statements about emulsion SBR and solution SBR. I. Solution SBR has higher content of non-rubber materials than emulsion SBR II. Solution SBR has higher molecular weight but broader molecular weight distribution than emulsion SBR III. Solution SBR has higher cis-1,4-polybutadiene content than emulsion SBR Which of the following statements are true?

A

I, II, III

B

I, II

C

III only

D

I only

The peptide formation involves two amino acids covalently joined together between the carboxyl group of one amino acid and the amino group of another.

A

True

B

False

Trypsin cleaves peptide bonds on the ‘c’ terminal side of the positively charged residues Arg and Lys, if the next residues is not _____

A

His

B

Gly

C

Ala

D

Pro

Consider the following statements regarding genetic code and choose the correct answer:
1. The genetic code is degenerate
2. In all amino acids the first two bases are the same in all the codons that represent a particular amino acid
3. The number of codons an amino acid can claim is proportional to the frequency of the amino acid in proteins
4. Amino acids with codons ending in U or A also have codons ending in C or G respectively

A

Only 1, 2 and 3 are true

B

Only 2, 3 and 4 are true

C

Only 1, 3 and 4 are true

D

Only 1 and 4 are true

The study of national income accounts is of great importance because it
1. reveals the changes in the size and composition of the national product.
2. provides us with information about the distribution of national income in the society among various groups.
3. reveals the manner in which national expenditure is divided between consumption and investment.

A

Both 1 and 2 are correct

B

Both 2 and 3 are correct

C

Both 1 and 3 are correct

D

All of the above

In a batch process, the reaction takes place in the presence of an acid medium. The acid is drained from the reaction vessel at the rate of 15ml/s as a result of the density difference of the acid from the reacting component. To avoid wastage of acid, it is recycled to an acid tank which has 1000 L capacity. The acid drained from the reaction vessel, picks up 50 g/L solids from the reactor. Acid is fed once again to the process from acid tank. When the process is started, the acid is almost pure in the tank as a result of filtration. As the reaction proceeds, acid in the tank gets more and more contaminated with the solids. The concentration of the solids should not exceed 100 g/L from the process point of view. The batch time is 16h. Estimate whether the concentration of the solids will exceed 100g/L during the batch reaction.

A

37.04 h

B

30.05 h

C

36.04 h

D

32.05 h

Mc-Gehee and Thayer recommend which of the following three tier approach to determine the training needs?
1. Organisational Analysis
2. Operational/Task Analysis
3. Man Power Analysis
4. Assets Value Analysis
5. Inventory Analysis
6. Skill Analysis

A

4, 5 and 6

B

2, 3 and 6

C

1, 2 and 3

D

1, 3 and 5

Chymotrypsin: Nucleophilic catalysis:: Carboxypeptidase A: __________

A

General acid-base catalysis

B

Specific acid-base catalysis

C

Electrophilic catalysis

D

Nucleophilic catalysis

How many peptide linkages does a hexapeptide have?

A

4

B

5

C

6

D

7

What is the role of carboxypeptidase B and trypsin-like peptidases in glucagon formation?

A

Inactivates glucagon

B

Hydrolyze proglucagon into glucagon

C

Helps in the breakdown of glucagon

D

Dehydrates glucagon