Question

During glycogen degradation glucose-1-phosphate is converted to glucose-6-phosphate and is an example of a coupled reaction....

During glycogen degradation glucose-1-phosphate is converted to glucose-6-phosphate and is an example of a coupled reaction. If the phosphoryl group transfer potential for glucose-1-phosphate is -20.9 kJ/mol and for glucose-6-phosphate is -13.8 kJ/mol, then what is the Keq (K) at 298 K? Is the conversion of glucose-1-phosphate to glucose-6-phosphate favorable or unfavorable under standard conditions?

ΔG° = -RT ln K where R = 8.315 x 10-3 kJ/mol*K

K = 0.057 and the reaction is unfavorable.
K = 17.5 and the reaction is favorable.
K = 0.057 and the reaction is favorable.
K = 17.5 and the reaction is unfavorable.
0 0
Add a comment Improve this question Transcribed image text
Answer #1

Answer:

To decide favourable or unfavourable

Here in biological transformation,

The value of equilibrium constant for the reaction is given as follows

i.e.,

- K = 17.5 & the reaction is favourable

So The reaction has a value

Thus the reaction is spontaneous or favourable.

So option B is correct

Add a comment
Know the answer?
Add Answer to:
During glycogen degradation glucose-1-phosphate is converted to glucose-6-phosphate and is an example of a coupled reaction....
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • 1) SHOW WORK 12. During glycolysis, glucose 1-phosphate is converted to fructose 6-phosphate in two successive...

    1) SHOW WORK 12. During glycolysis, glucose 1-phosphate is converted to fructose 6-phosphate in two successive reactions: glucose 1-phosphate → glucose 6-phosphate glucose 6-phosphate + fructose 6-phosphate AG'' = -7.1 kJ/mol AG'º = +1.7 kJ/mol 13. The standard free-energy changes for the reactions below are given. phosphocreatine → creatine + Pi ATP → ADP + Pi AG" = 43.0 kJ/mol AG" = -30.5 kJ/mol What is the overall AG' for the following reaction? Iw a dee Hydrolysis of 1 M...

  • Part 1 (2 points)See Hint (A) Phosphorylation of glucose to produce glucose-6-phosphate has ΔG˚' = ?...

    Part 1 (2 points)See Hint (A) Phosphorylation of glucose to produce glucose-6-phosphate has ΔG˚' = ? kJ/mol without the use of ATP. (B) Coupling phosphorylation with ATP hydrolysis gives ΔG˚' =? kJ/mol. Part 2 (1 point) Using concentrations of intermediates found in a cell, the phosphorylation of glucose using inorganic phosphate has ΔG' = 19.7 kJ/mol, while phosphoryl transfer from ATP (ATP investment) results in ΔG' = -34.5 kJ/mol. What does this tell you about the values of Q and...

  • The first reaction in glycolysis is the phosphorylation of glucose:

    The first reaction in glycolysis is the phosphorylation of glucose:Pi+glucose⟶glucose−6−phosphate+H2OThis is a thermodynamically unfavorable process, with ΔG∘′=+13.8kJ/mol.Part AIn a liver cell at 37 ∘C the concentrations of both phosphate and glucose are normally maintained at about 5 mM each. =>theequilibrium concentration of glucose-6-phosphate = 1.2*10^-7 MPart BThis very low concentration of the desired product would be unfavorable for glycolysis. In fact, the reaction is coupled to ATP hydrolysis to give the overall reactionATP+glucose⟶glucose−6−phosphate+ADP+H+ΔG∘′ for the coupled reaction is -18.4 kJ/mol

  • If the ΔG°′ for the conversion of glucose-6-phosphate to glucose-1-phosphate is 7.5 kJ/mol at 25°C, what...

    If the ΔG°′ for the conversion of glucose-6-phosphate to glucose-1-phosphate is 7.5 kJ/mol at 25°C, what is the Keq for the reaction? A. 2.1 × 10–16 B. 4.8 × 10–2 C. 21 D. 4.7 × 1015 E. None of the answers is correct.

  • the enzyme hexokinase can catalyze the following reaction: fructose + ATP -> fructose 6 phosphate +...

    the enzyme hexokinase can catalyze the following reaction: fructose + ATP -> fructose 6 phosphate + adp if the deltaG of hydrolysis of fructose 6 phosphate to fructose + Pi is -13.8 kj/mol and hydrolysis of atp to adp + pi is -30kj/mol, calculate Keq for the reaction above (R = 8.31 j mol-1 K-1, T = 298 k 3a. The enzyme hexokinase can catalyze the following reaction: Fructose + ATP → Fructose-6-phosphate + ADP If the ΔGo of hydrolysis...

  • Consider the following reaction: Glucose + ATP ↔Glucose -6-phosphate + ADP Using the information in the...

    Consider the following reaction: Glucose + ATP ↔Glucose -6-phosphate + ADP Using the information in the below determine Go for this reaction and comment on the spontaneity of this reaction. What the information does the Go parameters in the table below provides about the rate of the ATP hydrolysis. Below is the structure of glucose-6-phosphate. Identify which anomer does it represent? Standard free energies of hydrolysis of some phosphorylated compounds compound Go   (kJ mol-1) ATP (to ADP) -30.5 pyrophosphate -19.3...

  • In the first step of glycolysis, the given two reactions are coupled. reaction 1: reaction 2:...

    In the first step of glycolysis, the given two reactions are coupled. reaction 1: reaction 2: glucose +P: ATP + H2O glucose-6-phosphate + H,O + ADP + P AG = +13.8 kJ/mol AG = -30.5 kJ/mol Answer the four questions about the first step of glycolysis. Is reaction 2 spontaneous or nonspontaneous? O nonspontaneous O spontaneous Complete the net chemical equation. ATP+ + Calculate the overall AG for the coupled reaction. AG = kJ/mol Is the first step in glycolysis...

  • In the first step of glycolysis, the given two reactions are coupled... thank you! In the...

    In the first step of glycolysis, the given two reactions are coupled... thank you! In the first step of glycolysis, the given two reactions are coupled. reaction 1 glucose P АТР + H,О AG+13.8 kJ/mol AG 30.5 kJ/mol glucose-6-phosphate +H20 ADPP reaction 2: Answer the four questions about the first step of glycolysis Is reaction 2 spontaneous or nonspontaneous? nonspontaneous spontaneous Complete the net chemical equation АТР+ + glucose Calculate the overall AG for the coupled reaction. glucose-6-phosphate ADP AG...

  • The second step of glycolysis is the conversion of glucose-6-phosphate to fructose-6-phosphate. What is the ΔG...

    The second step of glycolysis is the conversion of glucose-6-phosphate to fructose-6-phosphate. What is the ΔG for this reaction at 25oC, when the glucose-6-phosphate] is 60 mM and the [fructose-6-phosphate] is 40 mM. Note: the ΔGo’ for this reaction is +1.7 kJ/mol (at 25oC). 0.780 kJ/mol 1.26 kJ/mol 1.47 kJ/mol 2.70 kJ/mol 0.695 kJ/mol 2.62 kJ/mol Answer not listed

  • The enzyme hexokinase catalyzes the following reaction: Glucose + ATP ↔ Glucose 6-phosphate + ADP For...

    The enzyme hexokinase catalyzes the following reaction: Glucose + ATP ↔ Glucose 6-phosphate + ADP For this reaction, ΔG° = +16.7 kJ/mol a. Calculate the equilibrium constant for this reaction at 25 °C. Is this reaction spontaneous under standard conditions at this temperature? Calculate the ΔG if the reaction temperature was 25 °C and the concentrations are: glucose, 55.0 mM,; ATP, 5.00 mM; ADP, 1.00 mM; and glucose 6-Phosphate, 0.100 mM. Would the reaction be spontaneous under the conditions of...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT