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The four elements making 99 % of living system are :
1. CHOS
2. CHOP
3. CHON
4. CNOP

Subtopic:  Introduction |
 90%
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Glycogen is a polymer of :
1. Galactose
2. Glucose
3. Fructose
4. Sucrose

Subtopic:  Carbohydrates: Starch & Glycogen |
 90%
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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

Subtopic:  Enzymes | Enzyme Catalysis |
 89%
From NCERT

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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

Subtopic:  METABOLIC BASIS FOR LIVING (OLD NCERT) |
 55%

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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

Subtopic:  Carbohydrates: Glycosidic Bond & Disaccharide |
 85%
From NCERT

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The most abundant enzyme is :
1. Carbonic anhydrase
2. Nitrogenase
3. Catalase
4. Rubisco

Subtopic:  Proteins |
 89%
From NCERT

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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

Subtopic:  Factors Affecting Enzyme Catalysis Reaction |
 72%

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Which of the following is an essential amino acid?
1. Phenylalanine
2. Aspartic acid
3. Glutamic acid
4. Serine

Subtopic:  Amino Acids |
 83%

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Most abundant organic compound on earth is
1. Cellulose
2. Protein
3. Lipids
4. Steroids

Subtopic:  Carbohydrates | Introduction |
 82%

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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

Subtopic:  Lipids |
 60%

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