The enzyme pyruvate decarboxylase uses several redox coenzymes. Which of the following is the best description...
The enzyme pyruvate decarboxylase uses several
redox coenzymes. Which of the following is the best
description of the coenzymes NADH and FADH2?
A.NADH of a prosthetic group and FADH2 is a cosubstrate.
B.FADH2 of a prosthetic group and NADH is a cosubstrate.
C. NADH and FADH2 are both is cosubstrates.
D. NADH and FADH2 are both prosthetic groups
Homework Answers
B.FADH2 of a prosthetic group and NADH is a cosubstrate.
because
flavin adenine dinucleotide (FAD) is a redox cofactor, more specifically a prosthetic group, involved in several important reactions in metabolism
and
Nicotinamide adenine dinucleotide (NAD) is a coenzyme found in all living cells and Cosubstrates are loosely bound coenzymes that are required in stoichiometric amounts by enzymes.
Add Answer to:
The enzyme pyruvate decarboxylase uses several
redox coenzymes. Which of the following is the best
description...
2. The heme group found in hemoglobin is an example of which of the following? a....
2. The heme group found in hemoglobin is an example of which of the following? a. Metal ion b. Cosubstrate c. Coenzyme d. None of the above 3. A is altered in the course of the reaction and dissociates from the active site of the enzyme a. Cosubstrate b. Prosthetic group c. Metal ion d. None of the above 4. NADH is an example of an a. Metal ion b. Organic cofactor c. Coenzyme d. B and C A catalytically...
2. The heme group found in hemoglobin is an example of which of the following? a....
2. The heme group found in hemoglobin is an example of which of the following? a. Metal ion b. Cosubstrate c. Coenzyme d. None of the above 3. A is altered in the course of the reaction and dissociates from the active site of the enzyme a. Casubstrate b. Prosthetic group c. Metal ion d. None of the above 4. NADH is an example of an a. Metal ion b. Organic cofactor c. Coenzyme d. B and C A catalytically...
ICE Chapter 7 .) Match each Catalytic Mechanism or Enzyme Mediated Reaction to its description: a....
ICE Chapter 7 .) Match each Catalytic Mechanism or Enzyme Mediated Reaction to its description: a. Act as molecular switches by turning on/off cell signaling and gene expression Acid-Base Catalysis b. Isomerizations, condensations, and Covalent Catalysis dehydrations (hydrolysis) c Nucleophile group on the enzyme attacks an electrophile substrate, forming an enzyme- Metal lon Catalysis substrate intermediate d. Proton transfer involving water or a functional group Coenzyme Dependent Redox Reactions e. Include dehyd rogenases. Involves NAD /NADH, NADP*/NAD PH, FAD/FADH2, FMN/FMNH2...
I1. Mammals lack the enzyme a. Lactate dehydrogenase b. Pyruvate kinase Alcohol Dehydrogenase c. d. Pyruvate...
I1. Mammals lack the enzyme a. Lactate dehydrogenase b. Pyruvate kinase Alcohol Dehydrogenase c. d. Pyruvate decarboxylase None of the above are correct e. 12. The first reaction of the Krebs cycle combines Oxaloacetate and Acetyl CoA to make Citrate b. a. Malate and NADH to make Citrate a-ketoglutarate and citrate to make CO2 d. c- Succinate and Citrate to make Oxaloacetate 13. The electrons held by NADH and FADH, are donated to the which complexes in the ETC respectively?...
15. Genetic defect in pyruvate dehydrogenase complex lead a. maple syrup urine disease b. phenyike d....
15. Genetic defect in pyruvate dehydrogenase complex lead a. maple syrup urine disease b. phenyike d. lactic acidemia e. pellagra syrup urine disease b, phenylketonuria c. galactosemia 10. Chemical modification by phosphorylation of pyruvate dehydros a. deactivates the enzyme b. activates the enzyme lation of pyruvate dehydrogenase complex : 17. Pyruvate carboxylase is positively ated through the allosteric mechanism by : a. ATP b. NADH c. Acetyl-SCOA d. TPP e. Biotin 18. Which of the listed coenzymes does not particip...
6. The active site A. is located on an enzyme. B. is rich in amino acids....
6. The active site A. is located on an enzyme. B. is rich in amino acids. C. is located on a substrate. D. A. and B. E. B. and C. 9. Which of the following molecules is the oxidizing agent in cellular respiration? A. H2O B. Glucose C.O2 D. CO2 10. The substrate for glycolysis is A. Glucose. B. Acetyl-coA. C. Pyruvate D. NADH 12.Which of the following is a product of glycolysis? A. FADH2 B. CO2 C. GTP D....
Which of the following reactions are non spontaneous? A. Fe+2 > e' + Fe+3 B. pyruvate...
Which of the following reactions are non spontaneous? A. Fe+2 > e' + Fe+3 B. pyruvate + 2H+ + 2e' > lactate C. ATP > ADP + Pi D. NADH + H+ > 2e' + NAD+ + H+ E. FAD + 2H+ +2e' > FADH2
3 20 The conversion pyruvate to either ethanol or lactate occurs A. when there is an abundance of pyruvate but a deficiency of onygen B. when there is an abundance of BOTH pyruvate and oxygen C....
3 20 The conversion pyruvate to either ethanol or lactate occurs A. when there is an abundance of pyruvate but a deficiency of onygen B. when there is an abundance of BOTH pyruvate and oxygen C. when there is a deficiency of BOTH pyruvate and oxygen D. for the regeneration of NADH so that hydrolysis of ATP can continue to fuel the glycolysis pathway Explain how gluconeogenesis differs from gtycolysis 21 Gluconeogenesis is simply the reverse of all 10 steps...
Which one of the following statements about glucose metabolism is correct? A. Prokaryotes do not perform...
Which one of the following statements about glucose metabolism is correct? A. Prokaryotes do not perform Krebs cycle for respiration. B. Krebs cycle involves the breakdown of a molecule of pyruvate into 6 CO2, 8 NADH, 2 FADH2, and 2 GTP molecules. C. The enzyme that catalyzes the addition of phosphate molecules to ADP in order to make ATP is called a kinase. D. In both glycolysis and Krebs cycle, the energy released from the breakdown of molecules is being...
1. Which enzyme is NOT part of the GNG process? a .Pyruvate kinase b. Pyruvate carboxylase...
1. Which enzyme is NOT part of the GNG process? a .Pyruvate kinase b. Pyruvate carboxylase c. Phosphoenolpyruvate carboxykinsase d. Glucose-6-phosphatase 2. Which molecule can NOT be derived from pyruvate in human? a. Oxaloacetate b. Acetyl CoA c. Lactate d. Ethanol 3. Which one of the following statements regarding the ruminant gluconeogenesis process is correct? a. It leads to net gain of ATP. b. It begins with propionate. c. It begins with lactate. d. It begins with pyruvate.
2. The heme group found in hemoglobin is an example of which of the following? a. Metal ion b. Cosubstrate c. Coenzyme d. None of the above 3. A is altered in the course of the reaction and dissociates from the active site of the enzyme a. Cosubstrate b. Prosthetic group c. Metal ion d. None of the above 4. NADH is an example of an a. Metal ion b. Organic cofactor c. Coenzyme d. B and C A catalytically...
2. The heme group found in hemoglobin is an example of which of the following? a. Metal ion b. Cosubstrate c. Coenzyme d. None of the above 3. A is altered in the course of the reaction and dissociates from the active site of the enzyme a. Casubstrate b. Prosthetic group c. Metal ion d. None of the above 4. NADH is an example of an a. Metal ion b. Organic cofactor c. Coenzyme d. B and C A catalytically...
ICE Chapter 7 .) Match each Catalytic Mechanism or Enzyme Mediated Reaction to its description: a. Act as molecular switches by turning on/off cell signaling and gene expression Acid-Base Catalysis b. Isomerizations, condensations, and Covalent Catalysis dehydrations (hydrolysis) c Nucleophile group on the enzyme attacks an electrophile substrate, forming an enzyme- Metal lon Catalysis substrate intermediate d. Proton transfer involving water or a functional group Coenzyme Dependent Redox Reactions e. Include dehyd rogenases. Involves NAD /NADH, NADP*/NAD PH, FAD/FADH2, FMN/FMNH2...
I1. Mammals lack the enzyme a. Lactate dehydrogenase b. Pyruvate kinase Alcohol Dehydrogenase c. d. Pyruvate decarboxylase None of the above are correct e. 12. The first reaction of the Krebs cycle combines Oxaloacetate and Acetyl CoA to make Citrate b. a. Malate and NADH to make Citrate a-ketoglutarate and citrate to make CO2 d. c- Succinate and Citrate to make Oxaloacetate 13. The electrons held by NADH and FADH, are donated to the which complexes in the ETC respectively?...
15. Genetic defect in pyruvate dehydrogenase complex lead a. maple syrup urine disease b. phenyike d. lactic acidemia e. pellagra syrup urine disease b, phenylketonuria c. galactosemia 10. Chemical modification by phosphorylation of pyruvate dehydros a. deactivates the enzyme b. activates the enzyme lation of pyruvate dehydrogenase complex : 17. Pyruvate carboxylase is positively ated through the allosteric mechanism by : a. ATP b. NADH c. Acetyl-SCOA d. TPP e. Biotin 18. Which of the listed coenzymes does not particip...
6. The active site A. is located on an enzyme. B. is rich in amino acids. C. is located on a substrate. D. A. and B. E. B. and C. 9. Which of the following molecules is the oxidizing agent in cellular respiration? A. H2O B. Glucose C.O2 D. CO2 10. The substrate for glycolysis is A. Glucose. B. Acetyl-coA. C. Pyruvate D. NADH 12.Which of the following is a product of glycolysis? A. FADH2 B. CO2 C. GTP D....
3 20 The conversion pyruvate to either ethanol or lactate occurs A. when there is an abundance of pyruvate but a deficiency of onygen B. when there is an abundance of BOTH pyruvate and oxygen C. when there is a deficiency of BOTH pyruvate and oxygen D. for the regeneration of NADH so that hydrolysis of ATP can continue to fuel the glycolysis pathway Explain how gluconeogenesis differs from gtycolysis 21 Gluconeogenesis is simply the reverse of all 10 steps...
Most questions answered within 3 hours.
-
For Questions 1-4, assume you have 5 bits available:
1. For (positive) integers: What is the...
asked 1 minute from now -
convert grams into vloume with the density of water being at
.997514 g/cm^3 at 23.1 Celsuis...
asked 2 hours ago -
Foreman company obtained a $20,000, 6% loan on May 1, 2018.
Principal and interest will be...
asked 2 hours ago -
5. Problem 11.05 (Discounted Payback)
eBook
Project L costs $60,000, its expected cash inflows are $14,000
per...
asked 2 hours ago -
1. Which of the following is true about politics and health
organizations?
A. Health organizations are...
asked 2 hours ago -
A space vehicle is coasting at a constant velocity of 18.1 m/s
in the +y direction...
asked 4 hours ago -
5) Use the following balanced equation to answer questions
(a)-(i).
3 Cu(s) + 8 HNO3(aq) →...
asked 3 hours ago -
A three-year maturity bond with a 12% annual coupon rate is
currently traded at par $1000...
asked 3 hours ago -
1.
What is the minimum volume to use in the Spec 20 cuvette in order
to...
asked 4 hours ago -
A builder wants to install wall-to-wall carpeting in a living
room of length 8.87 m and...
asked 4 hours ago -
Organizational change can produce anxiety in those affected by
the change. In what ways can change...
asked 4 hours ago -
Ozone in the atmosphere may react with nitric oxide.
From the following data, calculate the DG...
asked 4 hours ago