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Q. No.An example of a metabolic conversion not catalyzed by an enzyme in a living system will be:
1. formation of a peptide bond
2. carbon dioxide dissolving in water
3. crossing over in meiosis
4. None, as there is no un-catalyzed metabolic conversion in living systems
Subtopic: METABOLIC BASIS FOR LIVING (OLD NCERT) |
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Which of the following molecules is involved in the synthesis of cholesterol?
1. Tyrosine
2. Acetic acid
3. Gamma amino butyric acid
4. Tryptophan
1. Tyrosine
2. Acetic acid
3. Gamma amino butyric acid
4. Tryptophan
Subtopic: METABOLIC BASIS FOR LIVING (OLD NCERT) |
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Subtopic: METABOLIC BASIS FOR LIVING (OLD NCERT) |
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The most important form of energy currency in living systems is the bond energy in a chemical called:
1. ATP
2. Creatine phosphate
3. Acetyl CoA
4. Glucose
1. ATP
2. Creatine phosphate
3. Acetyl CoA
4. Glucose
Subtopic: METABOLIC BASIS FOR LIVING (OLD NCERT) |
90%
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Consider the given two statements:
I: The living state and metabolism are synonymous.
II: Metabolism provides a mechanism for the production of energy.
1. Both I and II are correct and II correctly explains I
2. Both I and II are correct but II does not correctly explain I
3. I is correct and II is incorrect
4. I is incorrect and II is correct
I: The living state and metabolism are synonymous.
II: Metabolism provides a mechanism for the production of energy.
1. Both I and II are correct and II correctly explains I
2. Both I and II are correct but II does not correctly explain I
3. I is correct and II is incorrect
4. I is incorrect and II is correct
Subtopic: THE LIVING STATE (OLD NCERT) |
65%
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Match each item in Column I with only one item in Column II and select the correct match from the codes given:
Codes:
| Column I [Component] |
Column II [% of the total cellular mass] |
| A. Protein | P. 2 |
| B. Carbohydrates | Q. 1 |
| C. Lipids | R. 5-7 |
| D. Nucleic acids | S. 3 |
| T. 10-15 | |
| U. 70-90 |
Codes:
| A | B | C | D | |
| 1. | U | P | R | Q |
| 2. | T | S | P | R |
| 3. | T | P | S | R |
| 4. | P | Q | R | S |
Subtopic: Introduction |
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Subtopic: Nucleic Acid: Nucleotides |
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Consider the given statements regarding some important secondary metabolites:
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
| I: | Morphine is a strong opiate that is found naturally in opium and is mainly used as a pain medication. |
| II: | Ricin is a toxin and a highly potent toxin produced in the seeds of the castor oil plant. |
| III: | Concanavalin A is a lectin and is widely used in biology and biochemistry to characterize glycoproteins and other sugar-containing entities on the surface of various cells. |
| IV: | Vinblastin is an anti-cancer drug typically used with other medications, to treat a number of types of cancer. |
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
Subtopic: Primary & Secondary Metabolites |
80%
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The given figure represents structure of glycogen/amylopectin. Identify A, B, C and D:
| A | B | C | D | |
| 1. | Reducing end | Non reducing end | α [1→4] linkage | α [1→6] linkage |
| 2. | Non reducing end | Reducing end | α [1→4] linkage | α [1→6] linkage |
| 3. | Reducing end | Non reducing end | α [1→6] linkage | α [1→4] linkage |
| 4. | Non reducing end | Reducing end | α [1→6] linkage | α [1→4] linkage |
Subtopic: Carbohydrates | Carbohydrates: Glycosidic Bond & Disaccharide | Carbohydrates: Starch & Glycogen |
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