Most common element present in human body is:

1. Oxygen 2. Carbon
3. Hydrogen 4. Sulfur

Subtopic:  Element Analysis |
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Which of the following is not an aromatic amino acid?

1. Phenylalanine 2. Threonine
3. Tyrosine 4. Tryptophan
Subtopic:  Amino Acids |
 80%
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Formation of glycosidic bond represents:

1. Dehydration 2. Hydrolysis
3. Dehydrogenation 4. Isomerization
Subtopic:  Carbohydrates |
 78%
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When we homogenize any tissues in an acid the acid soluble pool represents

1. Cytoplasm 2. Cell membrane
3. Nucleus 4. Mitochondria
Subtopic:  Introduction |
 80%
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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
Subtopic:  Enzyme Cofactors |
 82%
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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

Subtopic:  THE LIVING STATE (OLD NCERT) |
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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

Subtopic:  Enzyme Cofactors |
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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

Subtopic:  Proteins |
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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

Subtopic:  Enzyme Inhibition |
 89%
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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
Subtopic:  Enzyme Cofactors |
 67%
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