Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?
A
Enzymes require optimum pH for maximal activity.
B
Enzymes are denaturated at high temperature but in certain exceptional organisms they are effective even at temperatures 80o - 90oC.
C
Enzymes are highly specific.
D
Most enzymes are proteins but some are lipids.
2
AIPMT 2010 Mains
MCQ (Single Correct Answer)
+4
-1
The figure given below shows the conversion of a substate 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
A
B
C
D
Potential energy
Transition state
Activation energy
Activation energy with out enzyme
B
A
B
C
D
Transition state
Potential energy
Activation energy without enzyme
Activation energy with enzyme
C
A
B
C
D
Potential energy
Transition state
Activation energy with enzyme
Activation energy without enzyme
D
A
B
C
D
Activation energy with enzyme
Transition state
Activation energy without enzyme
Potential energy
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Carbohydrates are commonly found as starch in plants storage organs. Which of the following five properties of starch (1 $$-$$ 5) make it useful as a storage material?
(1) Easily translocated
(2) Chemically non-reactive
(3) Easily digested by animals
(4) Osmotically inactive
(5) Synthesized during photosynthesis
The useful properties are
