Consider the two statements:
Statement I: Majority of chemical reactions in living organisms occur in isolation.
Statement II: A few chemical reactions in living organisms like peptide bond formation are not catalysed.
1. Statement I is correct and Statement II is also correct
2. Statement I is incorrect and Statement II is correct
3. Statement I is incorrect and Statement II is also incorrect
4. Statement I is correct and Statement II is incorrect
Subtopic: METABOLIC BASIS FOR LIVING (OLD NCERT) | THE LIVING STATE (OLD NCERT) |
Please attempt this question first.
Hints
In peroxidase and catalase, heam is:
1. prosthetic group and is a part of active site
2. prosthetic group and is not a part of active site
3. is a co-enzyme
4. is a co-substrate
1. prosthetic group and is a part of active site
2. prosthetic group and is not a part of active site
3. is a co-enzyme
4. is a co-substrate
Subtopic: Enzymes Classification |
69%
Please attempt this question first.
Hints
Choose the mismatch among the following.
1. GLUT-4 – Unable glucose transport into cells
2. Trypsin – Enzyme
3. Essential oil – Lemon grass oil
4. Drug – Vinblastin
1. GLUT-4 – Unable glucose transport into cells
2. Trypsin – Enzyme
3. Essential oil – Lemon grass oil
4. Drug – Vinblastin
Subtopic: Primary & Secondary Metabolites |
73%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Read the given statements A, B and C and select the correct option.
1. Statements (A) and (B) are correct
2. Statements (B) and (C) are correct
3. Statements (A) and (C) are correct
4. Statements (A), (B) and (C) are correct
| (A) | All enzymes are proteinaceous in nature. |
| (B) | Some competitive inhibitors are often used in the control of bacterial pathogens. |
| (C) | Active site of an enzyme is formed by the folding of the backbone of tertiary structure of protein upon itself. |
2. Statements (B) and (C) are correct
3. Statements (A) and (C) are correct
4. Statements (A), (B) and (C) are correct
Subtopic: Proteins | Enzymes | Factors Affecting Enzyme Catalysis Reaction | Properties of Enzymes |
58%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Match column-I with column-II and select the correct option.
1. a(iii), b(i), c(ii), d(iv)
2. a(iii), b(ii), c(iv), d(i)
3. a(iii), b(ii), c(v), d(i)
4. a(iii), b(v), c(ii), d(iv)
| Column-I | Column-II | ||
| a. | Catalyse the transfer of specific groups other than hydrogen from one substrate to other | (i) | Oxido- reductases |
| b. | Catalyse the breakdown of larger molecules into smaller with addition of water |
(ii) | Lyases |
| c. | Catalyse removal of groups from substrates by mechanism other than hydrolysis leaving double bonds |
(iii) | Transferases |
| d. | Catalyse linking together of 2 compounds | (iv) | Ligases |
| (v) | Hydrolases |
2. a(iii), b(ii), c(iv), d(i)
3. a(iii), b(ii), c(v), d(i)
4. a(iii), b(v), c(ii), d(iv)
Subtopic: Enzymes Classification |
81%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select the correct match from among the following:
1. Collagen – Intracellular ground substance
2. Toxin – Codeine
3. Lectin – Ricin
4. Alkaloid – Morphine
1. Collagen – Intracellular ground substance
2. Toxin – Codeine
3. Lectin – Ricin
4. Alkaloid – Morphine
Subtopic: Primary & Secondary Metabolites |
72%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select the incorrect statement among the following:
| 1. | Palmitic acid has 16 carbons including carboxyl carbon. |
| 2. | Lipids are not polymers but they are assembled from smaller molecules by dehydration. |
| 3. | Arachidonic acid has 20 carbon atoms including carboxyl carbon. |
| 4. | Lecithin is an example of phospholipid found in neural tissues but absent in cell membrane. |
Subtopic: Lipids |
82%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
If the enzyme commission number of an enzyme is 2.7.1.1 then it catalyse which of the following reaction?
1. \(\mathrm{AB}+\mathrm{H}_2 \mathrm{O} \rightleftharpoons \mathrm{AH}+\mathrm{BOH}\)
2.
3. \(S-G+S^{\prime} \rightarrow S+S^{\prime}-G\)
4. Alcohol + NAD → Aldehyde + NADH2
1. \(\mathrm{AB}+\mathrm{H}_2 \mathrm{O} \rightleftharpoons \mathrm{AH}+\mathrm{BOH}\)
2.
3. \(S-G+S^{\prime} \rightarrow S+S^{\prime}-G\)
4. Alcohol + NAD → Aldehyde + NADH2
Subtopic: Enzymes Classification |
55%
Please attempt this question first.
Hints
Read the given statements and choose the incorrect one:
| 1. | Oils generally have lower melting point than fats. |
| 2. | Percentage of total cellular mass of carbohydrates is higher than that of nucleic acids. |
| 3. | Relative abundance of carbon and hydrogen with respect to other elements is higher in any living organism than in the earth’s crust. |
| 4. | Abrin and ricin are toxins. |
Subtopic: Introduction | Lipids: Fatty Acids | Primary & Secondary Metabolites |
75%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
B-DNA is the most common form of DNA having all the following salient features except
1. The pitch would be 34 Å
2. The strand turns 36° at each step of ascent
3. The rise per base pair is 3.6 Å
4. One full turn of helical strand involves 10 base pairs
1. The pitch would be 34 Å
2. The strand turns 36° at each step of ascent
3. The rise per base pair is 3.6 Å
4. One full turn of helical strand involves 10 base pairs
Subtopic: Nucleic Acid | The DNA |
67%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
© 2024 GoodEd Technologies Pvt. Ltd.