Q. No.An amino acid that is negative charged amongst the following will be:
1. Glutamic acid
2. Lysine
3. Arginine
4. Histidine
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The metal ion that acts as a co-factor for both alcohol dehydrogenase and carbonic anhydrase is:
| 1. | Magnesium | 2. | Iron |
| 3. | Zinc | 4. | Nickel |
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The living state can be best described as a:
1. non equilibrium steady state
2. non equilibrium non steady state
3. equilibrium non steady state
4. equilibrium steady state
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The blood concentration of glucose in a normal healthy individual is:
| 1. 3.5 – 4.0 mM | 2. 4.0 – 4.5 mM |
| 3. 4.2 – 6.1 mM | 4. 5.0 – 5.5 mM |
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Consider the following two statements regarding enzyme action:
I. Co-factors play a crucial role in the catalytic activity of the enzyme.
II. Catalytic activity is reduced when the co-factor is removed from the enzyme.
Of the above statements:
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
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Assuming they all had the same number of carbon atoms, which of the following has the most C-H bonds?
1. an unsaturated fat
2. a polyunsaturated fat
3. a polysaccharide
4. a saturated fat
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An alpha helix is a:
1. primary structure of a protein
2. secondary structure of a protein
3. tertiary structure of a protein
4. quaternary structure of a protein
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The inhibition of succinic dehydrogenase by malonate is an example of:
1. Non-competitive reversible inhibition
2. Non-competitive irreversible inhibition
3. Competitive inhibition
4. Allosteric inhibition
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The enzymes that catalyse removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds are called as:
| 1. | Oxidoreductases | 2. | Hydrolases |
| 3. | Ligases | 4. | Lyases |
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Consider the following enzymes:
I. Catalase
II. Peroxidase
III. Carboxypeptidase
Which of these enzymes require haem as a co-factor for their activity?
| 1. | I only | 2. | I and II only |
| 3. | II and III only | 4. | I, II and III |
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