181.

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

Column I (Substrate)	Column II (Enzyme)	Column III (Product)
1.  Lactose	A.  Lipase	i. Galactose
2. Monogycerides	B. Trypsin	ii. Maltose
3. Starch	C. Lactase	iii. Fatty acid
4. Peptones	D. Amylase	iv. Dipeptides

• 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

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

Column I	Column II
A. Acetyl CoA	1. 3-carbon compound
B. Malic acid	2. 6-carbon compound
C. Pyruvic acid	3. 4-carbon compound
D. Glucose	4. 2-carbon compound

• 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