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
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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Enzymes, vitamins and hormones are common in :
1. Being proteinaceous
2. Being synthesized in the body of organisms
3. Enhancing oxidative metabolism
4. Regulating metabolism
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An enzyme brings about :
1. Decrease in reaction time
2. Increase in reaction time
3. Increase in activation energy
4. Reduction in activation energy
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The high energy bonds in an ATP molecule are between :
1. Ribose and nitrogenous base
2. Nitrogenous base and phosphate
3. Ribose and phosphate
4. Phosphate groups
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A glycosidic bond connects :
1. two monosaccharides
2. two amino acids
3. two fatty acids
4. a fatty acid and a glycerol
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All of the following are true of protein denaturation except that it
1. is a shape change
2. is always irreversible
3. may be caused by a pH change
4. could result from a temperature change
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Which of the following is an essential amino acid?
1. Phenylalanine
2. Aspartic acid
3. Glutamic acid
4. Serine
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