Select Chapter Topics:
Q. No.Which of the following forms part of a coenzyme?
1. \(\mathrm{Zn}^{2+}\)
2. Lipase
3. Vitamin B2
4. Lysine
Subtopic: Enzyme Cofactors |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
| Statement I: | Fatty acids can be classified as saturated if they contain no double bonds between the carbon atoms. |
| Statement II: | Saturated fatty acids are typically more liquid at room temperature compared to unsaturated fatty acids. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Lipids: Fatty Acids |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
| Statement I: | In the Watson-Crick model of DNA, the two strands of polynucleotides run parallel to each other. |
| Statement II: | The nitrogen bases in the DNA double helix are projected perpendicular to the sugar-phosphate backbone and face inside. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Double Helix : Watson & Crick |
59%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Identify the correct match based on the percentage distribution of elements:
| 1. | Sulphur (S): 3.3% in Earth's crust, 0.03% in the human body. |
| 2. | Magnesium (Mg): 2.1% in Earth's crust, 0.1% in the human body. |
| 3. | Calcium (Ca): 0.03% in Earth's crust, 1.5% in the human body. |
| 4. | Oxygen (O): 46.6% in the human body, 65% in the Earth's crust |
Subtopic: Introduction |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given statements:
| Statement I: | Glycine is the only amino acid that lacks a chiral carbon. |
| Statement II: | All amino acids in proteins are heteropolymers. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Amino Acids |
Please attempt this question first.
Hints
Consider the given two statements:
| Assertion (A): | Lipids are not considered macromolecules. |
| Reason (R): | Lipids are not polymers. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Lipids |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Coenzymes play crucial roles in metabolism by:
| 1. | Acting as a temporary storage of electrons and protons. |
| 2. | Serving as structural components of cell membranes. |
| 3. | Directly participating as one of the substrates in a reaction. |
| 4. | Acting as integral membrane proteins. |
Subtopic: Enzyme Cofactors |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
Choose the correct option:
| Assertion (A): | Malonate is a competitive inhibitor of succinic dehydrogenase enzyme. |
| Reason (R): | Malonate has a structure similar to fumarate, the product of succinate oxidation, and thus binds to the active site of succinic dehydrogenase. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Enzyme Inhibition |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which statement about amino acids is true?
| 1. | All amino acids possess a carboxyl group (-COOH) and an amino group (-NH2) in their side chain. |
| 2. | Amino acids serve as monomers for the synthesis of polysaccharides. |
| 3. | Only 10 amino acids are synthesized in the human body and the rest must be obtained from the diet. |
| 4. | The R-group (side chain) determines the unique characteristics and functions of each amino acid. |
Subtopic: Amino Acids |
56%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The molecule given in the figure is a:
1. Triose sugar
2. Fatty acid
3. Gamma amino acid
4. Three carbon alcohol
1. Triose sugar
2. Fatty acid
3. Gamma amino acid
4. Three carbon alcohol
Subtopic: Lipids |
52%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select Chapter Topics:
© 2025 GoodEd Technologies Pvt. Ltd.