Which of the following is not an example of a secondary metabolite produced in living organisms?
1. Lecithin
2. Alkaloids
3. Flavonoids
4. Antibiotics
1. Lecithin
2. Alkaloids
3. Flavonoids
4. Antibiotics
Match the following:
| Column-I | Column-II | ||
| (a) | Aquaporin | (i) | Amide |
| (b) | Asparagine | (ii) | Polysaccharide |
| (c) | Abscisic acid | (iii) | Polypeptide |
| (d) | Chitin | (iv) | Carotenoids |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (ii) | (i) | (iv) | (iii) |
| 4. | (iii) | (i) | (ii) | (iv) |
Which of the following are not secondary metabolites in plants?
| 1. | Vinblastin, curcumin | 2. | Rubber, gums |
| 3. | Morphine, codeine | 4. | Amino acids, glucose |
Match List-I with List-II.
| List-I | List-II | ||
| (a) | Protein | I. | C-C double bonds |
| (b) | Unsaturated fatty acid | II. | Phosphodiester bonds |
| (c) | Nucleic acid | III. | Glycosidic bonds |
| (d) | Polysaccharides | IV. | Peptide bonds |
Choose the correct answer from the options given below:
| Options: | (a) | (b) | (c) | (d) |
| 1. | II | I | IV | III |
| 2. | IV | III | I | II |
| 3. | IV | I | II | III |
| 4. | I | IV | III | II |
Identify the incorrect pair.
| 1. | Lectins - Concanavalin A | 2. | Drugs - Ricin |
| 3. | Alkaloids - Codeine | 4. | Toxin - Abrin |
Following are the statements with reference to 'lipids'.
| (a) | Lipids having only single bonds are called unsaturated fatty acids. |
| (b) | Lecithin is a phospholipid. |
| (c) | Trihydroxy propane is glycerol. |
| (d) | Palmitic acid has 20 carbon atoms including carboxyl carbon. |
| (e) | Arachidonic acid has 16 carbon atoms. |
You have to choose the correct statements out of the five given above. Choose the correct answer from the options given below:
| 1. | (b) and (c) only | 2. | (b) and (e) only |
| 3. | (a) and (b) only | 4. | (c) and (d) only |
Which of the following factor(s) do(es) not affect enzyme activity?
A. Temperature
B. pH
C. Enzyme concentration
D.Product concentration
E. Substrate concentration
F. Activation energy
1. C only
2. C & D
3. D only
4. F only
Which of the following set of coenzymes are nucleotides of vitamin niacin ?
1. NAD, NADP
2. FMN, FAD
3. ATP, ADP
4. ATP, FAD
Study the reaction given below
In absence of any enzyme this reaction is very slow, with 200 molecules of H2CO3 formed in one hour. In presence of an enzyme the reaction speeds up dramatically with about 600,000 molecules formed every second. Name the enzyme which has accelerated up the reaction by 10 million times.
1. Ribozyme
2. Carbonic anhydrase
3. Catalase
4. Peroxidase
All enzymes are proteins except
1. Trypsin
2. Pepsin
3. Steapsin
4. Ribozyme and Ribonuclease-P
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