Which one of the graphs shows the effect of pH on the velocity of a typical enzymatic reaction (V)?

1.     2.     3.      4.

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Which one of the graphs show the effect of temperature on the velocity of a typical enzymatic reaction?

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Which one of the following graphs show the relationship between the rate of an enzymatic activity and substrate conc.(S):

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Choose the correct statement(s):
(a) Km (Michaelis - Menten) constant is the substrate concentration at which the enzymatic reaction attains half of its maximum velocity (1/2 Vmax)
(b) At lower Km, higher the substrate affinity for enzyme
(c) Vmax is reached when all the active sites of an enzyme are saturated with substrate
(d) All are correct

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In competitive inhibition:

(a) Inhibitor resembles the substrate in molecular structure

(b) Competition between substrates and inhibitors to occupy active sites

(c) Binding the inhibitors to activities sites declines the enzyme action

(d) All are correct

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Amylase is an example of:

(a) Oxidoreductase                                      (b) Transferase

(c) Hydrolase                                              (d) Ligase

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


A. Catalyses the transfer of a group (other than hydrogen).
B. Catalyses removal group from substrates by mechanism other than hydrolysis leaving double bond
C. Catalyzing the linking of 2 molecules by using energy into one molecule.
Identify the classes of enzymes for above functions:

 

A

B

C

(a)

Ligase

Lyase

Transferase

(b)

Transferase

Lyase

Ligase

(c)

Lyase

Ligase

Transferase

(d)

Transferase

Ligase

Lyase

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The figure given below shows the conversion of a substrate into product by an enzyme. In which one of the four options (a-d) the components of reaction labelled as A, B, C and D are identified correctly?

 

A

B

C

D

(a)

Potential energy

Transition state

Activation energy with enzyme

Activation energy without enzyme

(b)

Transition state

Potential energy

Activation energy without enzyme

Activation energy with enzyme

(c)

Potential energy

Transition state

Activation energy with enzyme

Activation energy without enzyme

(d)

Activation energy with enzyme

Transition state

Activation energy without enzyme

Potential energy

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The adjoining graph shows change in conc. of substrate on enzyme activity. Identify A, B and C:

 

A

B

C

(a)

Ki

Km

Vmax

(b)

Km

Ki

(c)

Vmax

Km

(d)

Km

Vmax

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Go through the figures and select the correct option:

(a) I - In non-competitive type of enzymatic inhibition the V max decreases and Kremain unchanged

     II - In competitive type of enzymatic inhibition the Vmax decreases and Km remain unchanged

(b) II - In non-competitive type of enzymatic inhibition the Vmax decreases and Km remain unchanged

      I - In competitive type of enzymatic inhibition the Vmax remain same and Km is changed

(c)  I - In non-competitive type of enzymatic inhibition the Vmax increases and Km remain unchanged

      II - In competitive type of enzymatic inhibition the Vmax changes and Km decreases

(d)  I - In non-competitive type of enzymatic inhibition the Vmax increases and Km remain unchanged

      II - In competitive type of enzymatic inhibition the Vmax increases and Km increases

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: