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Q. No.Given below are two statements:
Statement I:
Amino acids have a property of ionizable nature of –NH2 and –COOH groups, hence have different structures at different pH.
Statement II:
Amino acids can exist as Zwitterionic form at acidic and basic pH.
In the light of the above statements, choose the most appropriate answer from the options given below:
1.
Both Statement I and Statement II are correct.
2.
Both Statement I and Statement II are Incorrect.
3.
Statement I is correct but Statement II is incorrect.
4.
Statement I is incorrect but Statement II is correct.
Subtopic: Amino Acids |
73%
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Match List-I with List-II
Choose the correct answer from the option given below
| List-I | List-II | ||
| (a) | Insulin | (i) | Phosphoester bond |
| (b) | Inulin | (ii) | Glycosidic bonds |
| (c) | Adenylic acid | (iii) | Peptide bonds |
| (d) | Arachidonic acid | (iv) | C = C double bonds |
Choose the correct answer from the option given below
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iv) | (iii) | (i) |
| 2. | (iii) | (ii) | (i) | (iv) |
| 3. | (iv) | (ii) | (iii) | (i) |
| 4. | (iv) | (i) | (ii) | (iii) |
Subtopic: Carbohydrates |
84%
From NCERT
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Read the given statements A, B and C and select the correct option.
1. Statements (A) and (B) are correct
2. Statements (B) and (C) are correct
3. Statements (A) and (C) are correct
4. Statements (A), (B) and (C) are correct
| (A) | All enzymes are proteinaceous in nature. |
| (B) | Some competitive inhibitors are often used in the control of bacterial pathogens. |
| (C) | Active site of an enzyme is formed by the folding of the backbone of tertiary structure of protein upon itself. |
2. Statements (B) and (C) are correct
3. Statements (A) and (C) are correct
4. Statements (A), (B) and (C) are correct
Subtopic: Proteins | Enzymes | Factors Affecting Enzyme Catalysis Reaction | Properties of Enzymes |
58%
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Match column-I with column-II and select the correct option.
1. a(iii), b(i), c(ii), d(iv)
2. a(iii), b(ii), c(iv), d(i)
3. a(iii), b(ii), c(v), d(i)
4. a(iii), b(v), c(ii), d(iv)
| Column-I | Column-II | ||
| a. | Catalyse the transfer of specific groups other than hydrogen from one substrate to other | (i) | Oxido- reductases |
| b. | Catalyse the breakdown of larger molecules into smaller with addition of water |
(ii) | Lyases |
| c. | Catalyse removal of groups from substrates by mechanism other than hydrolysis leaving double bonds |
(iii) | Transferases |
| d. | Catalyse linking together of 2 compounds | (iv) | Ligases |
| (v) | Hydrolases |
2. a(iii), b(ii), c(iv), d(i)
3. a(iii), b(ii), c(v), d(i)
4. a(iii), b(v), c(ii), d(iv)
Subtopic: Enzymes Classification |
81%
From NCERT
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Match column I with column II and select the correct option.
Column I Column II
a. Phosphate and hydroxyl group of (i) Peptide bond
sugar in a nucleotide
b. Polymer of amino acids (ii) Glycosidic bond
c. Polysaccharides (iii) Hydrogen bond
d. Adenine and thymine (iv) Ester bond
in a DNA
1. a(ii), b(iii), c(iv), d(i)
2. a(ii), b(iv), c(iii), d(i)
3. a(iv), b(i), c(ii), d(iii)
4. a(iv), b(i), c(iii), d(ii)
Column I Column II
a. Phosphate and hydroxyl group of (i) Peptide bond
sugar in a nucleotide
b. Polymer of amino acids (ii) Glycosidic bond
c. Polysaccharides (iii) Hydrogen bond
d. Adenine and thymine (iv) Ester bond
in a DNA
1. a(ii), b(iii), c(iv), d(i)
2. a(ii), b(iv), c(iii), d(i)
3. a(iv), b(i), c(ii), d(iii)
4. a(iv), b(i), c(iii), d(ii)
Subtopic: The DNA | Amino Acids | Zwitter ion & Peptide Bond | Carbohydrates: Glycosidic Bond & Disaccharide |
86%
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Read the statements A and B carefully and select the correct answer.
Statement A: Enzyme-substrate complex produced during a catalysed reaction is highly reactive.
Statement B: This complex dissociates into its product and changed enzyme with an intermediate formation of enzyme-product
complex.
1. Both statements A and B are correct
2. Both statements A and B are incorrect
3. Only statement A is correct
4. Only statement A is incorrect
Statement A: Enzyme-substrate complex produced during a catalysed reaction is highly reactive.
Statement B: This complex dissociates into its product and changed enzyme with an intermediate formation of enzyme-product
complex.
1. Both statements A and B are correct
2. Both statements A and B are incorrect
3. Only statement A is correct
4. Only statement A is incorrect
Subtopic: Enzymes | Enzyme Catalysis |
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Read the statements given below carefully
Out of the four statements given above regarding competitive inhibition, correct one is/are :
1. One
2. Two
3. Three
4. Four
| (a) | The inhibitor closely resembles the enzyme in its molecular structure. |
| (b) | Inhibitor competes with the substrate for substrate binding site of the enzyme. |
| (c) | It leads to decline in activity of the enzyme. |
| (d) | Malonate inhibition by succinate dehydrogenase is an example of the same. |
Out of the four statements given above regarding competitive inhibition, correct one is/are :
1. One
2. Two
3. Three
4. Four
Subtopic: Enzyme Inhibition |
From NCERT
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Match the structures given in column I, with their names in column II and select the correct option:
1. a(iii), b(iv), c(i), d(ii)
2. a(ii), b(iv), c(iii), d(i)
3. a(i), b(iv), c(ii), d(iii)
4. a(iv), b(iii), c(ii), d(i)
| Column I | Column II | ||
| a. |  |
(i) | Alanine |
| b. |  |
(ii) | Serine |
| c. |  |
(iii) | Glycine |
| d. |  |
(iv) | Glycerol |
2. a(ii), b(iv), c(iii), d(i)
3. a(i), b(iv), c(ii), d(iii)
4. a(iv), b(iii), c(ii), d(i)
Subtopic: Different Amino Acids |
82%
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| Assertion(A): | The acid-insoluble fraction contains lipids and proteins. |
| Reason(R): | The molecular weight of proteins and lipids is in the range of ten thousand daltons and above. |
| 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, (R) is false. |
| 4. | (A) is false, (R) is true. |
Subtopic: Element Analysis | Introduction |
70%
From NCERT
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Match the items listed in column-I with column-II.
Choose the correct option.
1. a(iii), b(iv), c(i), d(ii)
2. a(iv), b(iii), c(ii), d(i)
3. a(iv), b(ii), c(iii), d(i)
4. a(iv), b(iii), c(i), d(ii)
| Column -I | Column-II | ||
| a. | Cellulose | (i) | Storehouse of energy in plants |
| b. | Inulin | (ii) | Exoskeleton of arthropods |
| c. | Starch | (iii) | Polymer of fructose |
| d. | Chitin | (iv) | Structural element of plant cell wall |
1. a(iii), b(iv), c(i), d(ii)
2. a(iv), b(iii), c(ii), d(i)
3. a(iv), b(ii), c(iii), d(i)
4. a(iv), b(iii), c(i), d(ii)
Subtopic: Carbohydrates: Glycosidic Bond & Disaccharide | Carbohydrates: Starch & Glycogen | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
86%
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