A reaction is catalyzed by two enzymes, E1 and E2, acting in sequence. E1 follows Michaelis-Menten kinetics, while E2 shows positive cooperativity. If the substrate concentration is significantly increased, which of the following is MOST likely to be observed?
The overall reaction rate will increase proportionally to the substrate concentration.
The reaction rate will plateau because E1 becomes saturated.
The overall reaction rate will increase, but the rate enhancement due to E2 will be more pronounced than that due to E1.
The reaction will be inhibited due to substrate excess.
Related Questions
Which of the following is an example of biochemical catalyst?
Platinium gauze
Oxides of Nitrogen
Zymase
In a reversible reaction, a catalyst
Increases the rate of forward reaction only
Increases the rate of forward reaction and decreases that of backward reaction
Increases the rate of forward and backward reaction equally
Increases the rate of forward reaction to great extent than that of backward reaction
Hydrolysis of cane sugar is catalysed by :
Mineral acids
Enzymes
All of these
The velocity of oxidation of oxalic acid by acidified increase as the reaction progress. It is an example of
Promoters
Catalytic poisons
Autocatalysis
Inhibitors
Which is not correct for heterogeneous catalysis?
The catalyst decreases the energy of activation
The surface of catalyst plays an important role
The catalyst actually forms a compound with reactants
There is no change in the energy of activation
The catalyst used in lead chamber process of manufacture is
Platinum
Oxides of nitrogen
Nickel
Vanadium compounds
The reaction rate at a given temperature is slower when :
The energy of activation is higher
The energy of activation is lower
Entropy changes
Initial concentration of the reactants remains constant
The catalyst used in the chamber process of sulphuric acid is :
Platinum
Nitric oxide
Nickel
Vanadium pentoxide
The action of enzymes in living system is to
Supply energy to tissues
Create immunity
Circulate oxygen
Enhance the rate of biochemical reactions
Which statement is wrong?
Haber’s process of requires iron as catalyst
Friedel-Crafts reaction requires anhydrous
Hydrogenation of oils requires iron as catalyst
Oxidation of requires
