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

Subtopic:  Enzymes Classification |
 84%
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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 |
 68%
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The property of the water molecule that is most important for the maintenance of homeostasis in living organisms is:
1. High latent heat of vaporization
2. High latent heat of fusion
3. High specific heat
4. Liquid form more dense than solid form

Subtopic:  Element Analysis |
 78%

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Chitin, a complex polysaccharide, is found in:

1. Plant cell wall
2. The exoskeleton of arthropods and cell walls of most fungi
3. Bacterial cell wall
4. Cartilage and other connective tissues
Subtopic:  Carbohydrates: Cellulose, Chitin, Inulin & Agar |
 97%
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Given below is the structure of a monosaccharide. The homopolymer of this monosaccharide is used in:

1. Storage of carbohydrates in plants
2. Storage of carbohydrates in animals
3. Making the medium for microbial culture
4. Formation of the structure of the plant cell wall

Subtopic:  Carbohydrates: Cellulose, Chitin, Inulin & Agar |
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Given below is the structure of a lipid. The excess of this compound in human blood can lead to:

1. Alzheimer’s disease 2. Phenylketonuria
3. Atherosclerosis 4. Rheumatoid arthritis
Subtopic:  Lipids: Glycerolipids, Phospholipids & Glycerol |
 69%

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Shown below is a level of structural organization of a protein. Which of the following proteins attains its final form as this structure?

1. Keratin 2. Fibroin
3. Tropo-collagen 4. Myoglobin
Subtopic:  Structural Organisation of Proteins |

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The following diagram depicts the structure of a:

 

1. Nucleoside
2. Nucleotide
3. Nitrogen containing monosaccharide
4. Glycoprotein
Subtopic:  Nucleic Acid: Nucleotides |
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The triple helix structure of collagen was discovered by:
1. G. N. Ramachandran
2. Y. S. Subbarao
3. C. V. Raman
4. S. Chandrashekhar

Subtopic:  Proteins |
 85%
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The living state of an organism is a :
1. non-equlibrium steady state
2. non-equilibrium variable state
3. steady state in perfect equlibrium
4. variable state in perfect quilibrium

Subtopic:  THE LIVING STATE (OLD NCERT) |
 79%
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