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Q. No.Consider the following two statements:
I:
Enzyme catalyzed reactions are affected by the change in the temperature and pH.
II:
Change in pH and temperature affects the tertiary structure of proteins.
1.
Both I and II are correct and II explains I
2.
Both I and II are correct but II does not explain I
3.
I is correct but II is incorrect
4.
I is incorrect but II is correct
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
74%
From NCERT
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Consider the given two statements:
| I: | Lipids come under acid insoluble fraction. |
| II: | Lipids are macromolecules. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | I is correct but II is incorrect |
| 4. | I is incorrect but II is correct |
Subtopic: Element Analysis |
59%
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Consider the given two statements:
| I: | In competitive enzyme inhibition, the substrate and inhibitor cannot bind to the enzyme at the same time. |
| II: | The inhibitor always has a much higher affinity for the active site than the normal substrate. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | I is correct but II is incorrect |
| 4. | I is incorrect but II is correct |
Subtopic: Enzyme Inhibition |
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | Dietary proteins are the source of essential amino acids. |
| Reason (R): | All essential amino acids are aromatic. |
| 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. | Both (A) and (R) are False. |
Subtopic: Proteins |
85%
From NCERT
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Regarding polysaccharides:
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: | Cellulose does not contain complex helices. |
| II: | Inulin is a polymer of fructose. |
| III: | Left end of glycogen is the reducing end |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Carbohydrates | Carbohydrates: Starch & Glycogen | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
71%
From NCERT
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Identify the incorrect statement:
| 1. | Zinc is a cofactor for carboxypeptidase |
| 2. | NADP contains the vitamin cyanocobalamin |
| 3. | Malonate is a competitive inhibitor of Succinic dehydrogenase |
| 4. | Haem is the prosthetic group in peroxidase |
Subtopic: Enzyme Cofactors |
82%
From NCERT
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Identify the correct statement:
| 1. | α amino acids are substituted methanes |
| 2. | Only triglycerides are lipids that are both macromolecules as well as polymers |
| 3. | Cellulose forms secondary helical structures and can hold iodine molecules in the helical portion |
| 4. | Every virus will have both DNA and RNA as its genetic material |
Subtopic: Amino Acids |
76%
From NCERT
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Regarding various levels of protein structure, which of the following is not true?
| 1. | The positional information of amino acids in a protein is called the primary structure. |
| 2. | Alpha helix is a secondary structure and beta pleated sheet is a tertiary structure of a protein. |
| 3. | Tertiary structure is absolutely necessary for the many biological activities of proteins. |
| 4. | Quaternary structures are seen in proteins made of more than one polypeptide chain. |
Subtopic: Proteins |
86%
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Subtopic: Amino Acids |
92%
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Subtopic: Amino Acids |
83%
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