Q. No.Enzymes speed up the chemical reactions by:
1. Getting used up in the reaction
2. Formation of different products
3. Converting endothermic reactions to exothermic
4. Lowering activation energy
1. Getting used up in the reaction
2. Formation of different products
3. Converting endothermic reactions to exothermic
4. Lowering activation energy
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The substrate concentration at which the enzyme catalyzed reaction achieves ½ Vmax is its ____ value.
| 1. Km | 2. Kcat |
| 3. pKa | 4. Q10 |
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In general, with every 10oC rise in the temperature [in the range 0oC to 40oC], the rate of enzyme catalyzed reaction:
1. Becomes half
2. Gets doubled
3. Remains same
4. There is no such correlation in general
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Most common enzyme inhibition used in control of bacterial pathogens is:
| 1. Competitive | 2. Non - competitive |
| 3. Uncompetitive | 4. Mixed |
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Enzymes that catalyze removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds are:
| 1. Dehygdrogenases | 2. Transferases |
| 3. Lyases | 4. Ligases |
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The non protein constituent present in many enzymes is called:
| 1. Co-enzyme | 2. Co-factor |
| 3. Apoenzyme | 4. Holoenzyme |
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What is the co-factor for the proteolytic enzyme, carboxypeptidase?
| 1. Molybdenum | 2. Manganese |
| 3. Zinc | 4. Copper |
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Which of the following is not an aromatic amino acid?
| 1. Phenylalanine | 2. Threonine |
| 3. Tyrosine | 4. Tryptophan |
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