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Q. No.When the co-factor is removed from the enzyme:
1. catalytic activity is lost
2. catalytic activity is reduced
3. catalytic activity increases
4. catalytic activity remains same
Subtopic: Enzyme Cofactors |
84%
From NCERT
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Polysaccharides are components of cell wall in:
I: Plants
II: Fungi
III: Eubacteria
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
I: Plants
II: Fungi
III: Eubacteria
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: Carbohydrates |
60%
From NCERT
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Subtopic: Lipids |
76%
From NCERT
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A protein is imagined as a line, where:
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: | the left end is represented by the first amino acid and the right end is represented by the last amino acid. |
| II: | 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 II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Proteins |
79%
From NCERT
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The number of correct statement(s) from the statements given below is/are:
1. 1
2. 2
3. 3
4. 4
| I: | Cellulose is a polymeric polysaccharide consisting of only one type of monosaccharide. |
| II: | Starch is a homopolymer. |
| III: | Inulin is a polymer of fructose. |
| IV: | In glycogen, the right end is called the reducing end, and the left end is called the non-reducing end. |
2. 2
3. 3
4. 4
Subtopic: Carbohydrates: Starch & Glycogen | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
77%
From NCERT
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Consider the given two statements:
| Assertion (A): | Lipids separate in the macromolecular fraction of a cell. |
| Reason (R): | Lipids are associated with membranes in a cell. |
| 1. | Both (A) and (R) are True but (R) does not explain (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True and (R) correctly explains the (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Element Analysis |
From NCERT
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The substrate has to go through a much higher energy state or transition state:
I: if it is an exothermic or spontaneous reaction.
II: it is an endothermic or energy requiring reaction.
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: if it is an exothermic or spontaneous reaction.
II: it is an endothermic or energy requiring reaction.
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: Mechanism of Enzymes |
62%
From NCERT
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Coenzymes nicotinamide adenine dinucleotide (NAD) and NADP contain the vitamin:
| 1. | Riboflavin | 2. | Pantothenic acid |
| 3. | Niacin | 4. | Pteroylglutamic acid |
Subtopic: Enzyme Cofactors |
92%
From NCERT
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Match each item in Column-I with one in Column-II and select the correct match from the codes given:
Codes:
| Column-I | Column-II | ||
| A. | Lyases | P. | catalyse removal of groups from substrates by mechanisms other than hydrolysis, leaving double bonds |
| B. | Ligases | Q. | catalyse the linking together of 2 compounds |
| C. | Transferases | R. | catalyse the transfer of a group other than hydrogen between a pair of substrates |
| D. | Isomerases | S. | catalyse inter-conversion of optical, geometric or positional isomers |
Codes:
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | P | R | S |
| 3. | P | Q | S | R |
| 4. | R | R | Q | S |
Subtopic: Enzymes Classification |
90%
From NCERT
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The two strands of polynucleotides in a DNA double helix:
I: are identical.
II: are complementary.
III: are parallel.
IV: are antiparallel.
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
I: are identical.
II: are complementary.
III: are parallel.
IV: are antiparallel.
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
Subtopic: The DNA |
93%
From NCERT
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