Question 3: A runner just finished a marathon.For the enzymes listed below, indicate whether the enzyme activity is upregulated (1) ordownregulated (↓) in the muscle and liver, respectively.Enzyme(a) Glycogen synthase(b) Phosphofructokinase-1(c) Fructose-Bisphosphatase-2(d) Pyruvate kinase(e) Pyruvate carboxylase(f) Acetyl-CoA carboxylaseMuscleLiver

During the marathon, the runner required extra glucose in the blood for physical activity.…

Answered: Question 3: A runner just finished a…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Question 1: In some microorganisms, carbon fixation occurs by reversal of the citric acid cycle. This reversal is accomplished in part by the use of a strong reductant (ferredoxin) to drive the alpha-ketoglutarate dehydrogenase reaction in the reductive direction. Part a: ΔG°‘ for reaction as it occurs in the ‘normal’ (oxidative) citric acid cycle is -30.1 kJ/mol. The standard reduction potential for NADH is -0.32 V. In order to drive the reaction in the reverse direction, the reductant (a ferredoxin) must have a lower reduction potential than NADH/NAD+. Remembering that this is a two-electron reduction, and using the numbers given just above, compute the value of the ferredoxin reduction potential that would be needed to make the standard free energy zero (so that the reductive reaction is enegetically just as favorable as the oxidative reaction). Assume that all of the other reactants are the same in the reductive as in the oxidative reaction. Write out the steps in your calculation;…
QUESTION 10 A) In glycolysis, the glucose which has 6 carbon molecules is eventually broken down into 2 molecules of 3 carbon compounds as pyruvate. Regardless of all the enzymes involved, describe the key points that change the 6 carbon compound into two molecules of 3 carbon compound. B) As glycolysis splits glucose into two pyruvate molecules, the link reaction occurs twice per molecule of glucose. Briefly explain the process after pyruvate transported from the cytosol into the mitochondrial matrix.
QUESTION 37 Key enzymes in glycolysis and the Krebs cycle are allosterically regulated. Which of the following is FALSE? O a. The main control point of glycolysis is the enzyme phosphofructokinase. Ob. The main control point in the citric acid cycle is isocitrate dehydrogenase Oc. Isocitrate dehydrogenase is inhibited by ATP or NADH. O d. Phosphofructokinase is activated by citrate and ATP. Oe. If ATP levels are high and the citric acid cycle shuts down, acetyl CoA is diverted to the synthesis of fatty acids for storage lick Save and Submit to save and submit. Click Save All Answers to save all answers. S # 20 F3 $ F4 % L5 MacBook Pro
Question 10 ( Which statement is CORRECT? A) Glucokinase is not inhibited by glucose-6-phosphate B) Pyruvate kinase is allosterically activated by alanine OC) Phosphofructokinase is activated in the liver by citrate D) The dehydration reaction by enolase is irreversible due to a AG of -34 kJ/mol E) Inhibition of phosphofructokinase leads to the activation of hexokinase
Question 8 of 13 Fill in the blanks: Write C if only statement A is correct, Hif only statement B is correct, E if both statements are correct, M if both statements are incorrect. A. An enzyme catalyzes a reaction by providing an alternative reaction pathway that has a lower energy of activation. B. The enthalpy of the enzyme-catalyzed reaction decreases significantly as compared to the uncatalyzed reaction.
QUESTION 1 a. John has just taken his Lunch meal, after which he is going to takes his Daily soccer practice match in the next 30 min, how will glycolysis operate/work in such conditions or be applicable b. How will oxidative phosphorylation work in sickly John who usually practice daily in soccer? Make possible scenarios c. Enzymes are critical in the metabolism of most most organic compounds, actually 30% of reactions are catalysed by them. How would the inactive enzymes (Sickness) in electron Transport Chain compromise the fat breakdown in the body.
QUESTION 18 Explain the reason why at low ATP concentrations the velocity of PFK-1 is faster than when high ATP concentrations are present. Low (ATP) High (ATP) (Fructose 6-phosphate) PFK-1 activity
Question 6 Review Concept 8.4 Enzymes. Match the term and its description. Each term can only be used once. These are nonprotein enzyme helpers. [ Choose) These inhibitors bind to the active site of an enzyme, [ Choose ) competing with the substrate to decrease reaction > >
Question 2 The Michaelis Menten equation for enzyme kinetics can accurately predict when a single enzyme will catalyze one substrate molecule into product. True O False
Question 5
Question:- 33) Glucose-6-phosphate has different pathways that it can enter in the liver during the fed state. All of the following are possible except OA.) it is oxidized to acetyl CoA for fatty acid biosynthesis O B). it can enter the pathway for glycogen biosynthesis O c.) it is a substrate for glucose-6-phosphatase OD. )it is oxidized in glycolysis to provide energy for the body
QUESTION 18 Stable molecules that resemble the transition state of enzyme catalyzed reactions are very potent inhibitors. Provide an explanation as to why these compounds are better than inhibitors based on the substrate. TT TT Paragraph v v 3 (12pt) = - E · T Arial T T, O Mashups 66 HTHL CSS CS Scanned with CamScanner

SEE MORE QUESTIONS

Recommended textbooks for you

Biochemistry

ISBN:

9781319114671

Author:

Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:

W. H. Freeman

Lehninger Principles of Biochemistry

Biochemistry

ISBN:

9781464126116

Author:

David L. Nelson, Michael M. Cox

Publisher:

W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…

Biochemistry

ISBN:

9781118918401

Author:

Donald Voet, Judith G. Voet, Charlotte W. Pratt

Publisher:

WILEY

Biochemistry

ISBN:

9781319114671

Author:

Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:

W. H. Freeman

Lehninger Principles of Biochemistry

Biochemistry

ISBN:

9781464126116

Author:

David L. Nelson, Michael M. Cox

Publisher:

W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…

Biochemistry

ISBN:

9781118918401

Author:

Donald Voet, Judith G. Voet, Charlotte W. Pratt

Publisher:

WILEY

Biochemistry

ISBN:

9781305961135

Author:

Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal

Publisher:

Cengage Learning

Biochemistry

ISBN:

9781305577206

Author:

Reginald H. Garrett, Charles M. Grisham

Publisher:

Cengage Learning

Fundamentals of General, Organic, and Biological …

Biochemistry

ISBN:

9780134015187

Author:

John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson

Publisher:

PEARSON

SEE MORE TEXTBOOKS

Question 3: A runner just finished a marathon. For the enzymes listed below, indicate whether the enzyme activity is upregulated (1) or downregulated (↓) in the muscle and liver, respectively.