k_m (Michaelis constant) value of enzyme is the substrate concentration at which velocity of reaction is

1.V_max

2.one fourth of V_max

3.One third of V_max

4.half of V_max

Select the option which is not correct with respect to enzyme action:

1.Substrate binds with enzyme at its active site

2.Addition of lot of succinate does not reverse the inhibition of succinic dehydrogenase by malonate

3.A non- competitive inhibitor binds the enzyme at a site distinct from that which binds the substrate

4.Malonate is a competitive inhibitor of succinic dehydrogenase

Which of the following class of enzyme is used for catalysing hydrolysis of ester, ether, peptide bonds?

1.Lyases

2.Ligases

3.Hydrolases

4.Both 1 and 2

Which of the following class of enzymes helps in catalysing a transfer of a group(other than hydrogen) between a pair of substrates?

1.Ligases

2.Lyases

3.Transferases

4.Hydrolases

Electron transferring enzymes belongs to which class of enzymes

1.Transferases

2.Oxidoreductases

3.Isomerases

4.Lyases

The non- protein constituent of the enzymes are called

1.Apoenzyme

2.Holoenzyme

3.Cofactors

4.both 1 and 3

Which of  the following are co-factors?

1.Co-enzymes

2.Metal ions

3.Posthetic groups

4.All of these

Which of the following is correct?

1.Apoenzyme = Holoenzyme + Coenzyme

2.Holoenzyme= Apoenzyme + Coenzyme

3.Coenzyme= Apoenzyme + Holoenzyme

4.Holoenzyme= Coenzyme + Cofactor

Which of the following is an inorganic compound?

1.Prosthetic group

2.Coenzymes

3.Metal ions

4.Apoenzymes

The Cofactor present in the Enzyme Catalase is

1.NADP

2.NAD

3.Haem

4.Zn