Which of the following destroys the Enzymatic activity?

1.high temperature

2.low temperature

3.p^H

4.Both 2 and 3

Which of the following factors can influence enzyme activity?

1. High temperature

2. pH

3. Substrate concentration

4. All of these

The competitive inhibitor of enzyme succinic dehydrogenase is

1.succinate

2.malonate

3.malate

4.mannose

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