Cellulose is present in

(1)cotton fibres

(2)Paper

(3)Cell wall of plants

(4)All of these

Exoskeleton of anthropods possesses chitin which is

1. A complex polysaccharide 

2. A polymer of N-acetylglucosamine

3. Known for forming complex helices in its secondary structure

4. Both (1) & (2)

Match the following :
(a) Aquaporin (i) Amide
(b) Asparagine (ii) Polysaccharide
(c) Abscisic acid (iii) Polypeptide
(d) Chitin (iv) Carotenoids
Select the correct option :
1. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
2. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
3. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
4. (a)-(iii), (b)-(i), (c) -(ii), (d)-(iv)

Read the following and choose the correct option

A : Chitin is a homopolysaccharide

B : Cellulose consists of $\beta$-D glucose

1. A is correct B is wrong

2. A is wrong, B is correct

3. Both A and B are correct

4. Both A and B are wrong

Select the incorrect statement.

1. Dietary proteins are the source of essential amino-acids.

2. Concanavalin A is a lectin and is considered a secondary metabolite

3. Cellulose, inulin, starch and glycogen are homopolymers of glucose

4. Phosphodiester bonds are a characteristic feature of both RNA and DNA