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 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
Exoskeleton of arthropods is composed of :
1. Glucosamine
2. Cutin
3. Cellulose
4. Chitin
Read the following statements on lipids and find out correct set of statements:
a: | Lecithin found in the plasma membrane is a glycolipid. |
b: | Saturated fatty acids possess one or more c=c bonds. |
c: | Gingely oil has lower melting point, hence remains as oil in winter. |
d: | Lipids are generally insoluble in water but soluble in some organic solvents. |
e: | When fatty acid is esterified with glycerol, monoglycerides are formed. |
Choose the correct answer from the options given below:
1. (a), (b) and (d) only
2. (a), (b) and (c) only
3. (a), (d) and (e) only
4. (c), (d) and (e) only
Given below are two statements:
Statement I: | Cellulose is a polymeric polysaccharide |
Statement II: | The building blocks of cellulose are glucose molecules |
In the light of the above statements , choose the correct answer from the options given below:
1. | Statement I is correct but Statements II is incorrect. |
2. | Statements I is incorrect but Statements II is correct. |
3. | Both Statements I and Statements II are correct. |
4. | Both Statements I and Statements II are false. |
List-I | List-II | ||
(A) | Adenine | (I) | Pigment |
(B) | Anthocyanin | (II) | Polysaccharide |
(C) | Chitin | (III) | Alkaloid |
(D) | Codeine | (IV) | Purine |
(A) | (B) | (C) | (D) | |
1. | (IV) | (I) | (II) | (III) |
2. | (IV) | (III) | (II) | (I) |
3. | (III) | (I) | (IV) | (II) |
4. | (I) | (IV) | (III) | (II) |