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

1. Substrate binds with enzyme as its active site

2. Addition of lot of succinate does not reverse the inhibition of succinic dehydogenase 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

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

1. Transient but stable

2. Permanent but unstable

3. Transient but unstable

4. Permanent and stable

Which of the following statements regarding enzyme inhibition is correct?

1. Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein

2. Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme

3. Non-competitive inhibition of an enzyme can be overcome by adding large amount of substrate

4. Non-competitive inhibitors often bind to the enzyme irreversibly 

In amino acid is a

1. Substituted methane

2. Substituted ethane

3. Any acid having amino group

4. Derivative of indoacetic acid

Identify the amino acid with hydroxymethyl as its R group:

1. Glycine

2. Alanine

3. Serine

4. Phenylalanine

All of the following are nucleosides, except:

Which of the following secondary metabolites is an anticancer drug?

1.  Vinblastin

2.  Concanavalin A

3.  Abrin

4.  Ricin

Identify the incorrect statement regarding the structure of proteins:

In an average composition of a cell, the maximum % of total cellular mass [after water and protein] is constituted by:

1. Carbohydrates

2. Lipid

3. Nucleic acids

4. Ions

Identify the option, where all the columns are not matched correctly: