Who proposed the “induced fit hypothesis” about enzyme action?
a) Watson
b) Wilkins
c) Fischer
d) Koshland
Explanation: the binding of a substrate or some other molecule to an enzyme causes a change in the shape of the enzyme so as to enhance or inhibit its activity.
Which of the
following is true about activation energy?
a) the larger the activation energy, the faster the reaction
b) the smaller the activation energy, the faster the reaction
c) the larger the activation energy, the slower the reaction
d) both b and c
Enzymes dramatically reduce……..during the chemical reaction?
a) product
b) activation energy
c) productivity
d) all of these
For the reaction: 2H2O2 à 2H2O + 02; the activation energy is…….kj with no catalyst.
a) 50
b) 86
c) 11
d) 25
For the reaction: 2H2O2 à 2H2O + 02; the activation energy is…….kj with in the presence of enzyme catalyst.
a) 0
b) 8
c) 1
d) 5
Cofactors:
