Question

In the liver, phosphofructokinase . . A. catalyzes a reversible reaction B. is activated by fructose-2,6-bisphosphate...

In the liver, phosphofructokinase . .

A. catalyzes a reversible reaction

B. is activated by fructose-2,6-bisphosphate

C. activity is enhanced by higher glucagon concentrations

D. A, B, and C above

E. A and B above

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #2

answered by: anonymous
0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Fructose-1,6-bisphosphatase and phosphofructokinase (PFK-1) are inversely regulated by ____ and _____. a. fructose-2,6-bisphosphate; AMP b. insulin-glucagon...
Fructose-1,6-bisphosphatase and phosphofructokinase (PFK-1) are inversely regulated by ____ and _____. a. fructose-2,6-bisphosphate; AMP b. insulin-glucagon ratio c. feedback inhibition; phosphorylation/dephosphorylation d. A and B e. B and C
The enzyme phosphofructokinase-1 catalyzes the reaction Fructose-6-P + ATP  Fructose-1,6-bisphosphate + ADP. The ΔG’0 of...
The enzyme phosphofructokinase-1 catalyzes the reaction Fructose-6-P + ATP  Fructose-1,6-bisphosphate + ADP. The ΔG’0 of this reaction is -14.2 kJ/mol. Assume the following concentrations of substrates and products: Fructose-6-P, 1 mM. ATP, 2 mM. Fructose-1,6-bisphosphate, 0.5 mM. ADP, 0.5 mM. Assume the reaction takes place at 37 ºC. Calculate ΔG for this reaction
Consider phosphofructokinase, which statement is true? Fructose -2,6-bisphosphate and ATP inhibit the enzyme. High ATP activates...
Consider phosphofructokinase, which statement is true? Fructose -2,6-bisphosphate and ATP inhibit the enzyme. High ATP activates the enzyme; fructose -2,6-bisphosphate inhibits the enzyme. Low ATP activates the enzyme; fructose -2,6-bisphosphate inhibits the enzyme. Fructose -2,6-bisphosphate activates the enzyme and high ATP inhibits the enzyme. None of the above.
How are phosphofructokinase and fructose-1,6-diphosphatase are regulated by fructose-2,6-diphosphate? A. fructose-2,6-diphosphate acts as kinase, phosphorylating phosphofructokinase-1...
How are phosphofructokinase and fructose-1,6-diphosphatase are regulated by fructose-2,6-diphosphate? A. fructose-2,6-diphosphate acts as kinase, phosphorylating phosphofructokinase-1 and fructose-1,6-diphosphatase B. fructose-2,6-diphosphate acts as a catalyst, speeding up the production of phosphofructokinase-1 and fructose-1,6-diphosphatase for ATP production C. fructose-2,6-diphosphate facilitates the decarboxylation of phosphofructokinase-1 and fructose-1,6-diphosphatase D. fructose-2,6-diphosphate acts as an allosteric effector for phosphofructokinase-1 and fructose-1,6-diphosphatase E. none of the above
One target of AMPK is the bifunctional enzyme phosphofructokinase-2 that synthesizes fructose 2,6-bisphosphate. How does the...
One target of AMPK is the bifunctional enzyme phosphofructokinase-2 that synthesizes fructose 2,6-bisphosphate. How does the activation of AMPK assist in the treatment of diabetes?
What is the major rate limiting and regulatory enzymatic step in glycolysis? a. GAPDH b. Phosphofructokinase...
What is the major rate limiting and regulatory enzymatic step in glycolysis? a. GAPDH b. Phosphofructokinase c. Hexokinase d. Pyruvate Kinase Which following molecule(s) are positive regulators of this enzyme (PFK, Question 34)? a. Fructose-2,6-Bisphosphate b. AMP c. Citrate d. (c) and (d) e. ATP
Question 1: The reaction for the cleavage of fructose 1,6-bisphosphate to dihydroxyacetone phosphate and glyceraldehyde 3-phosphate...
Question 1: The reaction for the cleavage of fructose 1,6-bisphosphate to dihydroxyacetone phosphate and glyceraldehyde 3-phosphate is catalyzed by the enzyme fructose 1,6-bisphosphate aldolase and has a standard free energy change of ΔG°′ = +23.8 kJ/mol. A. What is the Keq of the reaction at 37 oC? (R = 8.314 J/°mol)? B. If the intracellular concentration of fructose 1,6-bisphosphate at equilibrium (ΔG = 0) was 10 mM, what would be the predicted concentration of the products? C. In cells, the...
1. Fructose 6-phosphate is transformed by an enzymatic reaction to become fructose 1,6-bisphosphate using which nucleotide-based...
1. Fructose 6-phosphate is transformed by an enzymatic reaction to become fructose 1,6-bisphosphate using which nucleotide-based molecule? Select one: a. Pyruvate dehydrogenase b. Adenosine Triphosphate c. Phosphofructokinase d. Phosphoglycerate kinase e. Pyruvate kinase 2. Which of the following chemical reactions does not occur during aerobic glycolysis? Select one: a. oxidation of NADH b. phosphorylation of ADP c. reduction of NAD+ d. enzymatic action of PFK e. hydrolysis of ATP 3. The prokaryotic enzyme DNA polymerase III performs a similar function...
Arginine kinase catalyzes the following reversible reaction: phosphoarginine + ADP <======> arginine + ATP a. What...
Arginine kinase catalyzes the following reversible reaction: phosphoarginine + ADP <======> arginine + ATP a. What is the Keqfor the reaction at 25oC when the equilibrium concentrations are as follows? phophoarginine: 0.737 mM ADP: 0.750 mM arginine: 4.78 mM ATP: 3.87 mM b.         What is the value of ΔGo’for the reaction? In which direction does it occur spontaneously?
Which of these correctly describes a difference between gluconeogenesis and glycolysis? Select all correct answers. a....
Which of these correctly describes a difference between gluconeogenesis and glycolysis? Select all correct answers. a. Gluconeogenesis is activated by fructose 2,6-bisphosphate; glycolysis is inhibited by this substance. b. Gluconeogenesis bypasses reaction 10 of glycolysis (only) c. Gluconeogenesis is activated by ATP, glycolysis is inhibited by ATP d. Gluconeogenesis consumes 6 ATP, glycolysis yields 2 ATP (per glucose) e. Gluconeogenesis bypasses reactions 1, 3, and 10 of glycolysis
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT