Column -I | Column-II | ||
a. | Cellulose | (i) | Storehouse of energy in plants |
b. | Inulin | (ii) | Exoskeleton of arthropods |
c. | Starch | (iii) | Polymer of fructose |
d. | Chitin | (iv) | Structural element of plant cell wall |
a. | Alanine is a sulphur containing amino acid |
b. | Tyrosine is an aromatic amino acid |
c. | Uracil is a substituted pyrimidine found in nucleic acids containing deoxyribose sugar |
d. | The nitrogenous bases are projected more or less perpendicular to the sugar-phosphate backbone of polynucleotide chain |
Column I | Column II | ||
a. | The structural component of the cell wall of fungi | (i) | Malonate |
b. | Competitive inhibitor of succinic dehydrogenase |
(ii) | Sucrose |
c. | Glycosidic bond | (iii) | Chitin |
d. | Alkaloid used as painkiller | (iv) | Morphine |
Assertion(A): | When glucose is catabolised to lactic acid, energy is liberated. |
Reason(R): | In an exothermic reaction, the energy level of ‘Product’ (lactic acid) is lower than that of ‘Substrate’ (glucose). |
1. | Both (A) and (R) are true but (R) is not the correct explanation of (A) |
2. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
3. | (A) is true, (R) is false |
4. | (A) is false, (R) is true |
Column-I | Column-II | ||
a. | Retentate | (i) | Diterpenes |
b. | Aromatic amino acid | (ii) | Valine |
c. | Neutral amino acid | (iii) | Nucleic acids |
d. | Terpenoids | (iv) | Tryptophan |
Statement A: | Just like inorganic catalysts, enzymes work efficiently at high temperatures and high pressures |
Statement B: | Thermal stability is an important quality of enzymes isolated from thermophilic organisms |
(a) | Lipids are generally water soluble. |
(b) | Dietary proteins are the source of essential amino acids. |
(c) | Paper made from plant pulp and cotton fibre is cellulosic in nature. |
(d) | In a nucleic acid, the bond between the phosphate and hydroxyl group of sugar is an ester bond. |
1. | One | 2. | Two |
3. | Three | 4. | Four |
(a) | In glycogen, the right end is the reducing one |
(b) | Cellulose and starch form complex helices |
(c) | Starch is the main structural component of papers made from plant pulp |
1. | Statements (a) and (b) are correct while statement (c) is incorrect |
2. | Statements (a) and (c) are correct while statement (b) is incorrect |
3. | Statements (b) and (c) are incorrect while statement (a) is correct |
4. | Statements (a) and (c) are incorrect while statement (b) is correct |
(a) | DNA possesses ribose sugar in its structure. |
(b) | Thymine bonds with cytosine through two hydrogen bonds. |
(c) | The rise per base pair in B-DNA would be 3.4 Å. |
(d) | The pitch of B-DNA would be 34 nm. |