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. |
Assertion (A): | Co-enzymes are inorganic compounds that bind tightly with the apoenzyme to form a holoenzyme. |
Reason (R): | Co-enzymes and prosthetic groups are cofactors. |
1. | (A) is False but (R) is True. |
2. | (A) is True but (R) is False. |
3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Assertion (A): | Humans are advised to take a diet rich in proteins. |
Reason (R): | Essential amino acids cannot be synthesized by the human body. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
3. | (A) is true, (R) is false. |
4. | (A) is false, (R) is true. |
Column I | Column II | ||
a. | Down's syndrome | (i) | Bacterial disease |
b. | Diphtheria | (ii) | Cannot hold I2 |
c. | Cellulose | (iii) | Congenital disorder |
d. | Starch | (iv) | Helical secondary structures |
(a) | Acetic acid is a precursor of a derived lipid called cholesterol. |
(b) | Lecithin is a phospholipid found in the cell membrane. |
(c) | Glycerol is trihydroxy propane, considered an alcohol but not a lipid. |
(d) | Palmitic acid has 16 carbons excluding carboxyl carbon. |
(e) | Arachidonic acid is a saturated fatty acid which has 19 carbons excluding carboxyl carbon. |
a. | Trihydroxy propane is an example of a simple lipid. |
b. | Fatty acids with one or more C = C double bonds are said to be saturated. |
c. | Palmitic acid has 16 carbons excluding the carboxyl carbon. |
d. | Lecithin is an example of a phospholipid. |