Consider the reactions of the synthesis and hydrolysis of ATP as a reversible ch
ID: 148734 • Letter: C
Question
Consider the reactions of the synthesis and hydrolysis of ATP as a reversible chemical reaction in which the forward reaction is ADP + Pi combining to form ATP and the reverse reaction is ATP being hydrolyzed into ADP + Pi. Given your knowledge of reversible reactions and chemical equilibrium, explain your predictions for each of the following:
a. If nothing else is added to the reaction and it is allowed to reach chemical equilibrium, will the concentrations of the reactants (ADP and Pi) and the products (ATP) change or remain the same?
b. Will both the synthesis and hydrolysis reactions still be occurring at chemical equilibrium? If so, how will the rates of these reactions compare at chemical equilibrium?
c. Recall that ATP has a higher energy level than does ADP + Pi. Which will have a higher concentration at chemical equilibrium, the reactants (ADP and Pi) or the product (ATP)? Why?
d. If you were to add an enzyme that catalyzes the synthesis of ATP, then what would happen to the rate of the forward (synthesis) and reverse (hydrolysis) reactions? How would the addition of this enzyme change the concentrations of the reactants (ADP and Pi) and the product (ATP)? Explain why.
Explanation / Answer
A:- If nothing is added , then it is favoured in the reverse direction and so as the concentration of reactant becomes more.
B:- No this reaction is favoured in the reverse direction. Hence if ATL synthase is not added as catalyst , then it does not attain equilibrium.
C:- ATP has higher concentration than the reactant . Bcoz Hydrogen is generated and it is kept in . D:- ATP synthase is added in order to carry the reaction forward