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

Consider the following enzymes:
I. Catalase
II. Peroxidase
III. Carboxypeptidase
Which of these enzymes require haem as a co-factor for their activity?

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

Chitin, a complex polysaccharide, is found in:

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

Given below is the structure of a lipid. The excess of this compound in human blood can lead to:

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

The following diagram depicts the structure of a:

The triple helix structure of collagen was discovered by:
1. G. N. Ramachandran
2. Y. S. Subbarao
3. C. V. Raman
4. S. Chandrashekhar

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