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Consider the reaction catalyzed by hexokinase:ATP glucose ADP glucose- 6 -phosphateA mixture containing ATP and glucose was incubated with hexokinase at and . Calculate the equilibrium concentrations of the reactants and products (see Table ).
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Step by Step Solution:
Step 1. Determine the equilibrium constant K for the given reaction at 25°C and pH 7 using the table 16-3.
Step 2. Write the equilibrium expression for the reaction K = [ADP][Gluc-6-P]/[ATP][Gluc].
Step 3. Let's assume the concentration change at equilibrium be x M for both glucose and ADP.
Step 4. Therefore, at equilibrium, the concentration of ATP will be (40-x) M, and the concentration of Glucose-6-phosphate will be (20+x) M.
Step 5. Substitute these values in the equilibrium expression and simplify to get the expression in terms of x: K = (20+x)^2 * x / (40-x).
Step 6. Solve this quadratic equation for x using the quadratic formula to get the value of x = 4.39 M.
Step 7. Substitute this value of x in the concentrations expressions to calculate the values at equilibrium.
Step 8. At equilibrium, [ADP] = x = 4.39 M, [ATP] = 35.61 M, [glucose] = 15.61 M, [glucose-6-phosphate] = 24.39 M.
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Question Text | Consider the reaction catalyzed by hexokinase:ATP glucose ADP glucose- 6 -phosphateA mixture containing ATP and glucose was incubated with hexokinase at and . Calculate the equilibrium concentrations of the reactants and products (see Table ). |
Topic | All topics |
Subject | Biology |
Class | Class 12 |
Answer Type | Text solution:1 |