Which one of the following statements is correct with reference to enzymes?
1. Apoenzyme = Holoenzyme + Coenzyme
2. Holoenzyme = Apoenzyme + Coenzyme
3. Coenzyme = Apoenzyme + Holoenzyme
4. Holoenzyme = Coenzyme + Co-factor

Subtopic:  Enzyme Cofactors |
 79%
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Which of the following are not polymeric?

1. nucleic acids 2. proteins
3. polysaccharides 4. Lipids
Subtopic:  Introduction | Lipids: Fatty Acids |
 82%
From NCERT
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Cellulose, the most important constituent of plant cell wall, is made of

1. Unbranched chain of glucose molecules linked by α 1, 4 glycosidic bond
2. Branched chain of glucose molecules linked by β 1, 4 glycosidic bond in straight chain and β 1, 6 glycosidic bond at the site of branching
3. Unbranched chain of glucose molecules linked by β 1, 4 glycosidic bond
4. Branched chain of glucose molecules linked by α 1, 6 glycosidic bond at the site of branching
Subtopic:  Carbohydrates |
 55%
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Which of the following bio-molecules is strictly not a polymer?

1. Carbohydrates 2. Proteins
3. Fats 4. Nucleic acids
Subtopic:  Lipids |
 75%
From NCERT
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Most of the polymerization reactions result from:

1.Redox reactions2.Dehydration synthesis
3.Hydrolysis4.Isomerization

Subtopic:  Proteins | Carbohydrates |
 67%
From NCERT
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The R group in a proteinaceous amino acid is hydroxymethyl. This amino acid:
1. is not an essential amino acid
2. is not genetically coded for
3. is involved in disulfide linkage
4. is acidic in nature

Subtopic:  Amino Acids |
 68%
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The given compound:

1. is a storage product in archaea
2. is the source of energy in fungi
3. is present in the cell walls of gram negative bacteria
4. is a structural component of plasma membrane
Subtopic:  Lipids |
 86%
From NCERT
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Identify the given nitrogenous base:

1. Adenine 2. Guanine
3. Thymine 4. Cytosine
Subtopic:  Nucleic Acid |
 84%
From NCERT
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Which of the following components is found in least amounts in an average cell?

1. Carbohydrates 2. Fats
3. Nucleic acids 4. Proteins
Subtopic:  Introduction |
 70%
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Most abundant protein in the whole of the biosphere is:

1.Collagen2.Cellulose
3.RuBisCO4.Keratin

Subtopic:  Proteins |
 86%
From NCERT
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