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Q. No.Which of the secondary metabolites is an important anti-cancer drug?
1.
Ricin
2.
Abrin
3.
Vincristine
4.
Atropine
Subtopic: Primary & Secondary Metabolites |
68%
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Subtopic: Zwitter ion & Peptide Bond |
89%
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Identify the incorrect statement:
| 1. | Each protein is a polymer of amino acids. |
| 2. | A protein is a heteropolymer and not a homopolymer. |
| 3. | Essential amino acids can be synthesized in our body. |
| 4. | Collagen is the most abundant protein in animal world. |
Subtopic: Proteins |
84%
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Identify the correct statements:
1. Only a and b
2. Only a and c
3. Only b and c
4. Only c and d
| a: | Plant cell walls are made of cellulose. |
| b: | Fungal cell walls are made of chitin. |
| c: | True bacterial cell walls are made of lipopolysaccharides. |
| d: | Archaeal cell walls are made of sporopollenin. |
2. Only a and c
3. Only b and c
4. Only c and d
Subtopic: Carbohydrates |
92%
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Nucleic Acids:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | are polynucleotides. |
| II: | are constituents of the true macromolecular fraction of any living tissue or cell. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Nucleic Acid |
83%
From NCERT
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Regarding the primary structure of a protein:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | The sequence of amino acids i.e., the positional information in a protein is called the primary structure of a protein. |
| II: | A protein is imagined as a line, the left end represented by the first amino acid and the right end represented by the last amino acid. |
| III: | The first amino acid is also called as C-terminal amino acid and the last amino acid is called the N-terminal amino acid. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Structural Organisation of Proteins |
73%
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Adult human haemoglobin consists of:
I: 4 subunits.
II: 4 types of subunits.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: 4 subunits.
II: 4 types of subunits.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Structural Organisation of Proteins |
83%
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In an enzyme catalysed biochemical reaction, the formation of enzyme-substrate complex is:
1. optional and transient
2. obligatory and transient
3. obligatory and permanent
4. needed only in anabolic reactions
1. optional and transient
2. obligatory and transient
3. obligatory and permanent
4. needed only in anabolic reactions
Subtopic: Enzyme Catalysis |
84%
From NCERT
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Consider the two statements:
| Statement I: | Whether it is an exothermic or spontaneous reaction or an endothermic or energy requiring reaction, the ‘S’ has to go through a much higher energy state or transition state. |
| Statement II: | Enzymes eventually bring down this energy barrier of activation energy making the transition of ‘S’ to ‘P’ more easy. |
| 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: Enzyme Catalysis |
86%
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Which of the following will not be correct for the steps of the catalytic cycle of an enzyme action?
| 1. | First, the substrate binds to the active site of the enzyme, fitting into the active site. |
| 2. | The binding of the substrate induces the enzyme to alter its shape, fitting more tightly around the substrate. |
| 3. | The active site of the enzyme, now in close proximity of the substrate, breaks the chemical bonds of the substrate and the new enzyme- product complex is formed. |
| 4. | The enzyme gets consumed in the reaction while releasing the product. |
Subtopic: Enzyme Catalysis |
84%
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