Transition state structure of the substrate formed during an enzymatic reaction is

1.transient but stable

2.permanent but unstable

3.transient and unstable

4.permanent and stable

Which of the following is correct for enzyme catalysed reaction?

1.Substrate is converted into Enzyme

2.Substrate is consumed in the reaction completely

3.Substrate is converted to product

4.Enzyme is converted to product

Which of the following is incorrect?

1.Enzymatic activity is maximum at its optimim p^H and temperature.

2.Enzymatic activity declines both below and above the optimum value.

3.Low temperatures destroys enzymatic activity

4.High temperatures destroys enzymatic activity

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