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
Role of enzyme in reactions is to:
1. Decrease activation energy
2. Increase activation energy
3. Act as an inorganic catalyst
4. None of the above
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) |
Identify the statement which is incorrect.
1. | Sulphur is an integral part of cysteine. |
2. | Glycine is an example of lipids. |
3. | Lecithin contains a phosphorus atom in its structure. |
4. | Tyrosine possesses an aromatic ring in its structure. |
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