15. What is the second favorable reaction in glycolysis? How is this step regulated? 16. If...
15. What is the second favorable reaction in glycolysis? How is this step regulated?
16. If the step in question 15 is inhibited and shut down, can the second reaction in glycolysis (G-6P conversion to F-6P) proceed? Justify your answer.
17. If the step in question 15 is inhibited and shut down, can the first reaction in glycolysis (glucose conversion to G-6P) proceed if it is not inhibited? Justify your answer.
Homework Answers
15) the second favourable step is the conversion of fructose-6-phosphaste to fructose-1,6- bisphosphaste by the enzyme phospjofructokimase-1 which is a irreversible step giving energy..!!
This step is regulated by many factors like ADP, fructose-6-phosphaste, fructose-2,6- bidphosphaste glucose activities this enzyme whreaes citrate, ATP inhibits this step..!!
17) if the 15 step is blocked It will inter convert Btw the formation of G-6-P to F-6-P due to the accumulation of F-6-P in the pathway as the enzyme perform the reversible reaction..!!
18) the conversion step will be inhibited as the G-6-P accumulated will provide the negative feedback mechanism hence inhibiting the conversion step
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15. What is the second favorable reaction in glycolysis? How is
this step regulated?
16. If...
In the second step of glycolysis (the pathway that begins the oxidative breakdown of sugars), the...
In the second step of glycolysis (the pathway that begins the oxidative breakdown of sugars), the enzyme phosphoglucose isomerase converts glucose 6-phosphate to fructose 6-phosphate. The equilibrium constant, K, for this reaction is 0.36. If ΔG° = –5.94 × log K, which conclusion can be made about this reaction? Choose one: A. The ΔG° is negative, so the reaction must be coupled to the hydrolysis of ATP. B. The ΔG° is negative, so the reaction will always proceed in the...
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...
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
4. What is the commited step of glycolysis and how is this enzyme regulated? 5. Glyceraldehyde-3-phophate...
4. What is the commited step of glycolysis and how is this enzyme regulated? 5. Glyceraldehyde-3-phophate dehydrogenase (GAPDH) is the most important enzyme in glycolysis. a. What two reactions are coupled by GAPDH? b. Draw the structure of the thiohemiacetal intermediate and show the mechanism for generating the acyl thioester intermediate. A+Bred Ared +B For the reaction: AG = Given: ngAE RT In n[Aj{8,al Nernst Equation: AE=A Use the reduction potentials in Table 14-4 to calculate the electromotive force, AE,...
answer questions 15) An apoenzyme + cofactor(s) - a) Inhibitor b) active site c) substrate d)...
answer questions
15) An apoenzyme + cofactor(s) - a) Inhibitor b) active site c) substrate d) holoenzyme 16) Aspartate-transcarbamylase is an enveloved in a pathway that may produces molecule called Cytidine triphosphate. Cytidine triphosphate can bind to anot t o this enzyme, rendering the active site nonfunctional. This is an example of a) ATP hydrolysis b) competitive inhibition c) feedback inhibition d) allosteric activation 17) Which of the following is false regarding fermentation? a) fermentation occurs in the absence of...
16. What is the relationship between free energy change of a reaction and the equilibrium constant?...
16. What is the relationship between free energy change of a reaction and the equilibrium constant? A B C D 17. The rate law for the reaction is first order in [A] and second order in [B]. If [A] is halved and [B] is doubled, by what factor does the rate increase, decrease, or remain the same? Explain 18. Consider the potential energy diagram shown below to answer the following question? Where is the transition state of the slower step....
16. The second step of Dilantin synthesis is an oxidation/reduction reaction. Show how you would complete...
16. The second step of Dilantin synthesis is an oxidation/reduction reaction. Show how you would complete the following oxidation/reduction reactions below: H3C CH3 ?? PCC ?? CH2Cl2
Please answer the question. Please write neatly and also make sure you answer is correct! Thank...
Please answer the question. Please write neatly and also make
sure you answer is correct! Thank you! If you do not know the
answer to a part, please don’t answer it! I will rate good! Also
please fill in the blank followed by the letter choice.
7. (8 pts) Complete the following statements about glycolysis using terms from the list below. Four of these will not be used. 3-phosphoglycerate aldolase dihydroxyacetone phosphate enolase fructose 1,6-bisphosphate glyceraldehyde 3-phosphate lactate oxidative pyruvate...
ignment Score: 69.4% Resources C Give Up? Feedback Try Again stion 7 of 12 > Attempt...
ignment Score: 69.4% Resources C Give Up? Feedback Try Again stion 7 of 12 > Attempt 5 Glycolysis is the process by which energy is harvested from glucose by living things. Several of the reactions of glycolysis are thermodynamically unfavorable, nonspontaneous, but proceed when they are coupled with other reactions, A. P, + glucose glucose-6 phosphate + H,0 AG = 3.30 kcal/mol B. P, + fructose - 6 phosphate-fructose-1,6-bisphosphate + HO AG = 3.90 kcal/mol C. ATP+H,0 — ADP+P AG=...
16 Which step consists of a phosphorylation reaction in which ATP is the phosphate source? b...
16 Which step consists of a phosphorylation reaction in which ATP is the phosphate source? b B с с d D е Е 17 Substrate-level phosphorylation accounts for approximately what percentage of the ATP formed during glycolysis? a 0% b 2% c 10% d 38% @ 100% 18 In addition to ATP, what are the end products of glycolysis? a CO2 and H2O b CO2 and pyruvate NADH and pyruvate d CO, and NADH e H2O, FADH2, and citrate 19...
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...
4. What is the commited step of glycolysis and how is this enzyme regulated? 5. Glyceraldehyde-3-phophate dehydrogenase (GAPDH) is the most important enzyme in glycolysis. a. What two reactions are coupled by GAPDH? b. Draw the structure of the thiohemiacetal intermediate and show the mechanism for generating the acyl thioester intermediate. A+Bred Ared +B For the reaction: AG = Given: ngAE RT In n[Aj{8,al Nernst Equation: AE=A Use the reduction potentials in Table 14-4 to calculate the electromotive force, AE,...
answer questions
15) An apoenzyme + cofactor(s) - a) Inhibitor b) active site c) substrate d) holoenzyme 16) Aspartate-transcarbamylase is an enveloved in a pathway that may produces molecule called Cytidine triphosphate. Cytidine triphosphate can bind to anot t o this enzyme, rendering the active site nonfunctional. This is an example of a) ATP hydrolysis b) competitive inhibition c) feedback inhibition d) allosteric activation 17) Which of the following is false regarding fermentation? a) fermentation occurs in the absence of...
16. What is the relationship between free energy change of a reaction and the equilibrium constant? A B C D 17. The rate law for the reaction is first order in [A] and second order in [B]. If [A] is halved and [B] is doubled, by what factor does the rate increase, decrease, or remain the same? Explain 18. Consider the potential energy diagram shown below to answer the following question? Where is the transition state of the slower step....
16. The second step of Dilantin synthesis is an oxidation/reduction reaction. Show how you would complete the following oxidation/reduction reactions below: H3C CH3 ?? PCC ?? CH2Cl2
Please answer the question. Please write neatly and also make
sure you answer is correct! Thank you! If you do not know the
answer to a part, please don’t answer it! I will rate good! Also
please fill in the blank followed by the letter choice.
7. (8 pts) Complete the following statements about glycolysis using terms from the list below. Four of these will not be used. 3-phosphoglycerate aldolase dihydroxyacetone phosphate enolase fructose 1,6-bisphosphate glyceraldehyde 3-phosphate lactate oxidative pyruvate...
ignment Score: 69.4% Resources C Give Up? Feedback Try Again stion 7 of 12 > Attempt 5 Glycolysis is the process by which energy is harvested from glucose by living things. Several of the reactions of glycolysis are thermodynamically unfavorable, nonspontaneous, but proceed when they are coupled with other reactions, A. P, + glucose glucose-6 phosphate + H,0 AG = 3.30 kcal/mol B. P, + fructose - 6 phosphate-fructose-1,6-bisphosphate + HO AG = 3.90 kcal/mol C. ATP+H,0 — ADP+P AG=...
16 Which step consists of a phosphorylation reaction in which ATP is the phosphate source? b B с с d D е Е 17 Substrate-level phosphorylation accounts for approximately what percentage of the ATP formed during glycolysis? a 0% b 2% c 10% d 38% @ 100% 18 In addition to ATP, what are the end products of glycolysis? a CO2 and H2O b CO2 and pyruvate NADH and pyruvate d CO, and NADH e H2O, FADH2, and citrate 19...
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