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Q. No.The given figure shows:
1. two amino acids linked by a peptide bond formed due to dehydration synthesis
2. two nucleotides linked by a dinucleotide bond formed due to dehydration synthesis
3. two amino acids linked by a peptide bond forming a zwitter ion
4. two nucleotides linked by an ester bond due to hydrolysis
Subtopic: Amino Acids |
81%
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In a nucleic acid:
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: | a phosphate moiety links the 5’ carbon of one sugar of one nucleotide to the 1’ carbon of the sugar of the succeeding nucleotide. |
| II: | the backbone of the strand is made up of alternate sugar and nitrogenous bases. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: The DNA | Double Helix : Watson & Crick |
51%
From NCERT
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The metabolic pathways in a living system:
I. are linear or circular
II. are series of linked reactions
III. are characterized by a definite rate and direction of flow of metabolites through them
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. are linear or circular
II. are series of linked reactions
III. are characterized by a definite rate and direction of flow of metabolites through them
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
71%
From NCERT
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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
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
73%
From 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
60%
From NCERT
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88%
From 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
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
65%
From NCERT
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Match List I with List II:
Choose the correct answer from the options given below:
1. A -III , B-II, C-I, D-IV
2. A -III, B-I, C-II, D-IV
3. A -IV, B-III, C-I, D-II
4. A -III , B-IV, C-II , D-I
| List I | List II | ||
| A. | Chitin | I. | Polymer of fructose |
| B. | Lecithin | II. | Protein |
| C. | Collagen | III. | Polysaccharide |
| D. | Inulin | IV. | Phospholipid |
Choose the correct answer from the options given below:
1. A -III , B-II, C-I, D-IV
2. A -III, B-I, C-II, D-IV
3. A -IV, B-III, C-I, D-II
4. A -III , B-IV, C-II , D-I
Subtopic: Proteins | Lipids | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
91%
From NCERT
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| A. | Cellulose and Starch can hold I2 due to formation of helical secondary structures |
| B. | Proteins transport nutrient across cell membrane and fight infectious organisms |
| C. | At high-temperature, enzymes get damaged while inorganic catalysts work efficiently |
| D. | In animal tissue, different drugs, pigments, essential oil, magnesium, O2 compounds are noticed |
| E. | DNA and RNA have three chemically distinct components - heterocyclic ring, pentose monosaccharide and phosphate |
1. D and E only
2. A and D only
3. A, B and D only
4. B, E and C only
Subtopic: The DNA | Proteins | Carbohydrates |
63%
From NCERT
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