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 :
| Column I | Column II | ||
| (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 β -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 |