Select Chapter Topics:
Q. No.The skeletal formula (showing numbering convention for substituent groups) of a simple aromatic ring shown below will be a part of the structure of all the following except:
1.
Thymine
2.
Cytosine
3.
Uracil
4.
Adenine
Subtopic: Nucleic Acid: Nucleotides |
58%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
| Assertion (A): | High temperature destroys enzymatic activity. |
| Reason (R): | Enzymes generally function in a narrow range of temperatures. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but the (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
Level 3: 35%-60%
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 |
Subtopic: Lipids |
50%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
The number of correct statements from the given statements are:
1. 2
2. 3
3. 4
4. 5
| I: | Almost all enzymes are proteins. |
| II: | Some nucleic acids can behave like enzymes. |
| III: | No enzyme in living organisms can function above 40 °C. |
| IV: | Enzymes are the reason that chemicals react with each other. |
| V: | Enzymes are not sensitive to pH in their environment. |
2. 3
3. 4
4. 5
Subtopic: Enzymes | Enzyme Catalysis | Factors Affecting Enzyme Catalysis Reaction |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Prosthetic groups are distinguished from other cofactors in that they:
1. Only I is true
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | are organic compounds. |
| II: | are tightly bound to the apoenzyme. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Enzyme Cofactors |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
The enzyme commission number of an enzyme 'X' is 2.3.1.4. 'X' belongs to a class of enzymes that catalyses:
| 1. | NAD+ + 2H+ + 2e- \(\longrightarrow\) NADH + H+ |
| 2. | S - G + S1 \(\longrightarrow\) S + S1 - G |
| 3. | X - C - C - Y \(\longrightarrow\) X - Y + C = C |
| 4. | A - B + H2O \(\longrightarrow\) A - OH + B - H |
Subtopic: Enzymes Classification |
61%
Level 2: 60%+
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 |
Level 3: 35%-60%
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 |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
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 |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Primary proteins are also known as polypeptides, because:
1. they are linear chains.
2. they are polymers of peptide monomers.
3. successive amino acids are joined by peptide bonds.
4. they can assume many conformations.
1. they are linear chains.
2. they are polymers of peptide monomers.
3. successive amino acids are joined by peptide bonds.
4. they can assume many conformations.
Subtopic: Proteins |
56%
Level 3: 35%-60%
NEET - 2022
Hints
Select Chapter Topics:
© 2026 GoodEd Technologies Pvt. Ltd.