Which of the following is true for competitive inhibition?

1. Km decreases but Vmax increases

2.  Km increases but Vmax decreases

3.  Km increases but Vmax remains same

4.  Km decreases but Vmax remains same

Subtopic:  Properties of Enzymes |
 70%
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NEET 2023 - Target Batch - Aryan Raj Singh
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What would happen to Km, in presence of a competitive inhibitor?

1. Increase

2. Decrease

3. remains constant

4. First increases then decreases

Subtopic:  Properties of Enzymes |
 77%
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NEET 2023 - Target Batch - Aryan Raj Singh
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What would happen to Vmax, in presence of a competitive inhibitor?

1. Increase

2. Decrease

3. remains constant

4. First increases then decreases

Subtopic:  Properties of Enzymes |
 81%
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NEET 2023 - Target Batch - Aryan Raj Singh
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km (Michaelis constant) value of enzyme is the substrate concentration at which velocity of reaction

1. Vmax

2.  one fourth of Vmax

3. One third of Vmax

4. half of Vmax

Subtopic:  Properties of Enzymes |
 91%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following in not an example of competitive inhibition?

1. Inhibition of succinic dehydrogenase by malonate

2. Inhibition of bacterial pathogens by sulpha drugs

3. Inhibition of alcohol dehydrogenase by ethanol in case of methanol poisoning

4. Inhibition of hexokinase by glucose-6-phosphate

Subtopic:  Enzyme Inhibition |
 64%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which of the following is true for Non- Competitive Inhibition?

1. It cannot be overcome by increasing the concentration of the substrate

2. Cyanide kills an animal by inhibiting cytochrome oxidase through non competitive inhibition

3. It does not interfere with the binding of the substrate to enzymes

4. All of these

Subtopic:  Enzyme Inhibition |
 85%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which of the following class of enzyme is used for catalysing hydrolysis of ester, ether, peptide bonds?

1. Lyases

2. Ligases

3. Hydrolases

4. Both A and B

Subtopic:  Enzymes Classification |
 75%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following class of enzyme catalyse removal of groups from substrates by mechanism other than hydrolysis leaving double bonds?

1. Lyases

2. Ligases

3. Isomerases

4. Hydrolases

Subtopic:  Enzyme Inhibition |
 83%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following class of enzyme catalyse the linking together of 2 compounds?

1. Lyases

2. Ligases

3. Hydrolases

4. Transferases

Subtopic:  Enzymes Classification |
 88%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following class of enzyme catalyse the joining of C-O and hydrolysis of C-N bonds respectively?

1. Lyases and Ligases

2. Ligases and Lyases

3. Ligases and Hydrolases

4. Lyases and Hydrolases

Subtopic:  Enzymes Classification |
 72%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh