Which protein is found in the maximum amount:
1. Catalase
2. Zinc carbonic anhydrase
3. Transferase
4. RUBISCO
Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by -
1. Base-sugar-OH
2. Base-sugar-phosphate
3. Sugar-phosphate
4. (Base-sugar-phosphate)n
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 secondary metabolites is a polymeric substance?
1. Ricin
2. Monoterpenes
3. Curcumin
4. Rubber
The tertiary structure of proteins can be destroyed by
1. High energy radiations
2. High temperature
3. Drastic changes in pH
4. All of these
Antibodies that help to fight infectious agents are
1. Polysaccharides
2. Amino acids
3. Proteins
4. Glucose
Which of the following is mismatched?
1. Chitin - Polymer of glucosamine
2. Glycogen - Polymer of glucose
3. Cellulose - Heteropolysaccharide
4. Inulin - Homopolysaccharide