Homework Answers
Both a and b
Glycolysis - Takes place in cytoplasm.
Some cells make ATP solely via substrate-level phosphorylation, either because they lack the electron transport chain, or because suitable terminal electrons acceptors are unavailable. They use glycolysis to make 2 ATP and 2 pyruvates from a molecule of glucose, plus 2 NADH. However, such cells cannot continue running glycolysis indefinitely because they quickly run out of NAD+, when all available NAD+ has been reduced to NADH. In respiring cells, NADH dumps electrons to the electron transport chain and regenerates NAD+. In the absence of respiration, this method of regenerating NAD+ is not available.
Fermentation reactions reduce pyruvate with electrons from NADH to regenerate NAD+ (opposite of pyruvate oxidation). These reactions produce ethanol in yeast, and lactic acid in mammalian cells (muscle cells under oxygen deficit and most tumor cells .
Fermentation reactions occur in the cytoplasm of both prokaryotic and eukaryotic cells.
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Question 14 Which occur(s) in the cytosol? Selected Answer: a. glycolysis Answers a. glycolysis b. fermentation...
QUESTION 73 Glucose is metabolized aerobically by the muscle in the following order: A. Electron Transport...
QUESTION 73 Glucose is metabolized aerobically by the muscle in the following order: A. Electron Transport → Kreb's Cycle → B-oxidation → Glycolysis B. Glycolysis → Kreb's Cycle – Electron Transport C. B-oxidation - Kreb's Cycle → Electron Transport D. Kreb's Cycle → B-oxidation Electron Transport QUESTION 74 Cardiac rhythm is initiated in the: A. A-V node B. Bundle of HIS C. SA node D. Purkinje fibers
3. Which of the following pathways operate when cells are growing anaerobically? a. Glycolysis b. Pyruvate...
3. Which of the following pathways operate when cells are growing anaerobically? a. Glycolysis b. Pyruvate Oxidation c. Kreb's Cycle d. Electron Transport Chain e. Two of the above
Where within the cell does glycolysis occur ? cytoplasm.. but not an option. cytosol?? Question 9...
Where within the cell does glycolysis occur ?
cytoplasm.. but not an option. cytosol??
Question 9 Where within the cell does glycolysis occur? 1 inner mitochondrial membrane 2 nucleus 3 mitochondrial matrix 4 cytosol S rough ER
QUESTION 26 Which of the following processes produce the most NADH molecules per glucose molecule consumed?...
QUESTION 26 Which of the following processes produce the most NADH molecules per glucose molecule consumed? O a. glycolysis b. lactic acid fermentation c. the Kreb's cycle d. the electron transport chain QUESTION 27 A cell contains.39 potassium and is surrounded by a solution that contains.19 potassium. How could the cell acquire more potassium? afacilitated diffusion O b. exocytosis OC. osmosis O d. active transport
D. 160 bpm QUESTION 72 A VO2 of 52 ml/kg/min would be approximately? A. 8 METS...
D. 160 bpm QUESTION 72 A VO2 of 52 ml/kg/min would be approximately? A. 8 METS B. 12 METS C. 15 METS D. 18 METS QUESTION 73 Glucose is metabolized aerobically by the muscle in the followir OA. Electron Transport Kreb's Cycle B-oxidation B. Glycolysis → Kreb's Cycle Electron Transport C. B-oxidation - Kreb's Cycle Electron Transport D.Kreb's Cycle B-oxidation Electron Transport
I'd like to ask the answers for all of the uestions Question 1. A reaction in...
I'd
like to ask the answers for all of the uestions
Question 1. A reaction in an anabolic pathway in a cell has a AG of +2.5 kcal/mol. Which of the following is true regarding this reaction? A. It will occur spontaneously. B. The product of the reaction has a lower free energy than the reactants. C. It can occur if it is coupled to ATP hydrolysis. D. It is an exergonic reaction. E. It is breaking a polymer into...
11) (a) During fermentation, cells generate ATP via...circle all that apply Electron Transport Chain or Citric...
11) (a) During fermentation, cells generate ATP via...circle all that apply Electron Transport Chain or Citric Acid Cycle or Glycolysis (b) If a cell ran out of NAD", then would that cell be able to continue performing glycolysis? If you say "no", then identify the specific step of glycolysis (draw it) that requires NAD. (c) During aerobic respiration, NAD* is regenerated when NADH donates its H atom to the electron transport chain. Explain how NAD is regenerated during fermentation. (d)...
12) Consider the conversion of pyruvate to lactate. Which statement is TRUE? OO OH 0 +...
12) Consider the conversion of pyruvate to lactate. Which statement is TRUE? OO OH 0 + CHU - C-CH0 pyruvate CH = CH-CH0 lactate a) It is the preparatory step to the creation of acetyl CoA and the release of CO2 b) It is the isomerization that allows glycolysis to occur (→ CH.CHOH + CO2). e) It is the only way to consume electrons under anaerobic conditions. d) It is a "fermentation step which makes ethanol as an alternative fuel....
Matching A. glycolysis B. Krebs cycle C. electron transport system also known as cytochrome system D....
Matching A. glycolysis B. Krebs cycle C. electron transport system also known as cytochrome system D. glycolysis and Krebs cycle E. glycolysis and electron transport chain F. Krebs cycle and electron transport chain G. glycolysis and Krebs cycle and electron transport chain H. none of the above 1. PGAL 2. Pyruvate 3. Alpha ketoglutaric acid 4. Cytochromes 5.Succine Acid 6. Citric acid 7. Malic acid 8. Fumaric acid 9. NADH -> NAD 10. FADH->FAD 11. FAD->FADH 12. Oxaloacelic acid 13....
Which of the following is false concerning metabolic strategies with respect to pathways/final electron acceptors? A....
Which of the following is false concerning metabolic strategies with respect to pathways/final electron acceptors? A. Aerobic respiration = Glycolysis, Kreb's Cycle, ETC/oxygen B. Anaerobic Respiration = Glycolysis /Organic Compounds C. Fermentation = Glycolysis/ Organic Compounds D. Anaerobic respiration = Glycolysis, Kreb's Cycle, ETC/nitrate, carbonate, sulfate, etc. Comparatively greater energy is released when? A. Carbon dioxide is the final electron acceptor B. hydrogen is the final electron acceptor C. nitrate is the final electron acceptor D. oxygen is the final...
QUESTION 73 Glucose is metabolized aerobically by the muscle in the following order: A. Electron Transport → Kreb's Cycle → B-oxidation → Glycolysis B. Glycolysis → Kreb's Cycle – Electron Transport C. B-oxidation - Kreb's Cycle → Electron Transport D. Kreb's Cycle → B-oxidation Electron Transport QUESTION 74 Cardiac rhythm is initiated in the: A. A-V node B. Bundle of HIS C. SA node D. Purkinje fibers
3. Which of the following pathways operate when cells are growing anaerobically? a. Glycolysis b. Pyruvate Oxidation c. Kreb's Cycle d. Electron Transport Chain e. Two of the above
Where within the cell does glycolysis occur ?
cytoplasm.. but not an option. cytosol??
Question 9 Where within the cell does glycolysis occur? 1 inner mitochondrial membrane 2 nucleus 3 mitochondrial matrix 4 cytosol S rough ER
QUESTION 26 Which of the following processes produce the most NADH molecules per glucose molecule consumed? O a. glycolysis b. lactic acid fermentation c. the Kreb's cycle d. the electron transport chain QUESTION 27 A cell contains.39 potassium and is surrounded by a solution that contains.19 potassium. How could the cell acquire more potassium? afacilitated diffusion O b. exocytosis OC. osmosis O d. active transport
D. 160 bpm QUESTION 72 A VO2 of 52 ml/kg/min would be approximately? A. 8 METS B. 12 METS C. 15 METS D. 18 METS QUESTION 73 Glucose is metabolized aerobically by the muscle in the followir OA. Electron Transport Kreb's Cycle B-oxidation B. Glycolysis → Kreb's Cycle Electron Transport C. B-oxidation - Kreb's Cycle Electron Transport D.Kreb's Cycle B-oxidation Electron Transport
I'd
like to ask the answers for all of the uestions
Question 1. A reaction in an anabolic pathway in a cell has a AG of +2.5 kcal/mol. Which of the following is true regarding this reaction? A. It will occur spontaneously. B. The product of the reaction has a lower free energy than the reactants. C. It can occur if it is coupled to ATP hydrolysis. D. It is an exergonic reaction. E. It is breaking a polymer into...
11) (a) During fermentation, cells generate ATP via...circle all that apply Electron Transport Chain or Citric Acid Cycle or Glycolysis (b) If a cell ran out of NAD", then would that cell be able to continue performing glycolysis? If you say "no", then identify the specific step of glycolysis (draw it) that requires NAD. (c) During aerobic respiration, NAD* is regenerated when NADH donates its H atom to the electron transport chain. Explain how NAD is regenerated during fermentation. (d)...
12) Consider the conversion of pyruvate to lactate. Which statement is TRUE? OO OH 0 + CHU - C-CH0 pyruvate CH = CH-CH0 lactate a) It is the preparatory step to the creation of acetyl CoA and the release of CO2 b) It is the isomerization that allows glycolysis to occur (→ CH.CHOH + CO2). e) It is the only way to consume electrons under anaerobic conditions. d) It is a "fermentation step which makes ethanol as an alternative fuel....
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