Match Column I with Column II and Column III. Choose the correct option.

• 1-A-i; 2-C-ii; 3-B-iii; 4-D-iv

• 1-D-i; 2-A-ii; 3-B-iii; 4-C-iv

• 1-C-i; 2-A-iii; 3-D-ii; 4-B-iv

• 1-C-i; 2-A-ii; 3-D-iii; 4-B-iv

• 1-C-i; 2-A-ii; 3-D-iii; 4-B-iv

The given organic compound is a diagrammatic representation of

• Lecithin

• Adenosine

• Adenylic acid

• Uridine

• Uridine

Which of the following statements about the structure of proteins is true?

• The sequence of amino acids in a protein represents the secondary structure

• The helices of proteins are always left handed

• Adult human hemoglobin consists of two subunits

• The left end of a protein is called the C-terminal and the right end is called the N-terminal

• The left end of a protein is called the C-terminal and the right end is called the N-terminal

Which of the following secondary metabolites belong to the group drugs?

I. Morphine

II. Curcumin

III. Codeine

IV . Vinblastine

V. Abrin

• I and II only

• I and V only

• II and III only

• II and IV only

• II and IV only

Some amino acids are coded by more than one codon as the code is

• unambiguous

• specific

• universal

• punctuated

• punctuated

In a polypeptide, amino acids are linked by

• An ester bond

• A hydrogen bond

• A covalent bond

• A glycosidic bond

• A glycosidic bond

Which of the following is/are cellulosic?

(i) Paper

(ii) Cotton fibre

(iii) Chitin

(iv) Glycogen

• (i) and (ii) only

• (i) and (iii) only

• (i), (iii) and (iv) only

• (iii) and (iv) only

• (iii) and (iv) only

188.

Which of the following statements about amino acids is false?

• Based on the nature of the carboxyl group there are many amino acids

• Amino acids are substituted methane

• Amino acids have an amino group and acidic group as substituent on the $\mathrm{\alpha }$-carbon

• There are four substituent groups occupying the four valency positions

• There are four substituent groups occupying the four valency positions

Match Column I with Column II and choose the right option

• A - 2; B - 4; C - 3; D - 1

• A - 2; B - 3; C - 4; D - 1

• A - 4; B - 1; C - 2; D - 3

• A - 4; B - 3; C - 1; D - 2

• A - 4; B - 3; C - 1; D - 2

Concanavalin A is

• an essential oil

• a lectin

• a pigment

• an alkaloid