Homework Answers
Ans A a more efficient shuttle system is used in heart cells compared to the shuttle system used in brain cells.
Brain cells have glycerol 3 phosphate shuttle which involves the loss of 1 ATP per NADH molecule formed as result of glycolysis.
Whereas heart cells have mala aspartate shuttle, so the total yield of ATP per glucose molecule is more here.
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What is the underlying reason for the difference in the yield of ATP from the complete...
9) Why store energy as fat? Determine the NET yield of ATP from the complete oxidation...
9) Why store energy as fat? Determine the NET yield of ATP from the complete oxidation of one molecule of the fatty acid stearic acid (18:0) to Co, as compared to the complete oxidation of the 18 total carbons in 3 molecules of glucose. On an ATP/carbon basis, how much more efficient in percent), is the oxidation of fats than carbohydrates for providing energy to the cell? Show your work for each part. (8 points) Net ATP yield of stearic...
Which of the following statements is not true? Glycolysis produces most of the ATP required by...
Which of the following statements is not true? Glycolysis produces most of the ATP required by aerobic organisms like us Glycolysis produces pyruvate, which is consumed by the Krebs cycle Glycolysis occurs in the cytosol of the cell Glycolysis is the first stage of cellular respiration • The Krebs cycle reactions Takes place in the cytoplasm Converts glucose to pyruvate Generate ATP with the help of an enzyme complex called ATP synthase Yield ATP, NADH, and FADH2 • Which of...
2a. What is the net yield of ATP from 1 glucose molecule metabolized anaerobically to lactate?...
2a. What is the net yield of ATP from 1 glucose molecule metabolized anaerobically to lactate? b. Why is the end product of anaerobic glycolysis in cells lactate, rather than pyruvate?
20. Inhibition of the enzyme malate dehydrogenase (MDH) from Plasmodium falciparum is a potential novel treatment...
20. Inhibition of the enzyme malate dehydrogenase (MDH) from Plasmodium falciparum is a potential novel treatment for malaria. MDH catalyzes the conversion of malate to oxaloacetate. Which metabolic pathway in P. falciparum will be directly affected if MDH is inhibited? a. Glycolysis b. The electron transport chain c. The citric acid cycle d. Alcohol fermentation 21. Which of the following compounds has the greatest amount of energy for a cell? a. CO b. ATP C. Glucose d. Lactic acid e....
20. Inhibition of the enzyme malate dehydrogenase (MDH) from Plasmodium falciparum is a potential novel treatment...
20. Inhibition of the enzyme malate dehydrogenase (MDH) from Plasmodium falciparum is a potential novel treatment for malaria. MDH catalyzes the conversion of malate to oxaloacetate. Which metabolic pathway in P. falciparum will be directly affected if MDH is inhibited? a. Glycolysis b. The electron transport chain c. The citric acid cycle d. Alcohol fermentation 21. Which of the following compounds has the greatest amount of energy for a cell? a. CO b. ATP C. Glucose d. Lactic acid e....
What is the critical difference between passive and active transport? A. passive requires energy but active...
What is the critical difference between passive and active transport? A. passive requires energy but active does not B. passive requires no energy, but active does C. passive and active each require energy, but passive requires less What is an enzyme? A. a protein that facilitates a reaction B. a protein that supplies water for hydrolysis reactions C. a protein that absorbs water during dehydration reactions The First Law of Thermodynamics states: A. energy can be changed from one form...
7) Why do hydrolysis reactions occur more readily in solution than dehydration reactions? A) Hydrolysis reactions...
7) Why do hydrolysis reactions occur more readily in solution than dehydration reactions? A) Hydrolysis reactions increase G, or Gibbs free energy of the system, B) Hydrolysis reactions are endergonic and increase entropy of the system. C) Hydrolysis reactions are exergonic and decrease entropy of the system. D) Hydrolysis reactions are exergonic and increase entropy of the system. 8) How do cells use the ATP cycle illustrated in the figure? AAA W A) Cells use the cycle to recycle ADP...
4. For each of the following sentences, fill in the blanks with the best word or...
4. For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Not all words or phrases will be used; each word or phrase can be used more than once. (2 point each; 34 points total) ADP lysosome oxidation phosphorylation NAD pyruvate plasma membrane oxidative phosphorylation acetyl CoA cytosol carbon dioxide nucleus NADH sucrose ubiquitination GTP electrons FADH2 reduction B-sheets matrix ATP FAD kinase vacuole H* mitochondria NADH inner membrane...
YOU MUST ANSWER THE FOLLOWING QUESTIONS ON YOUR OWN PRIOR TO CLASS REVIEW! 1. Label the...
YOU MUST ANSWER THE FOLLOWING QUESTIONS ON YOUR OWN PRIOR TO CLASS REVIEW! 1. Label the path of electrons through the light reactions of photosynthesis using the illustration below. A. Include PSII and PSI and label all the complexes involved i. Which complex pushes H* across the membrane? ii. Where do these electrons end up? iii. What is the purpose of splitting H2O? iv. Where do the light reactions take place? 2H2D Ot ENR NAOD ADP photolyetemi photosyetemi wlochtone be-...
In redox reactions Protons are transferred from one molecule to another One substance loses electrons and...
In redox reactions Protons are transferred from one molecule to another One substance loses electrons and the other gains electrons A substance that loses electrons is reduced, while a substance e that gains electrons are oxidized B and c are both correct Which process in eukaryotic cells will proceed normally whether oxygen (O2) is present of not? Electron transport Glycolysis The citric acid cycle Oxidative phosphorylation Chemiosmosis How many carbon atoms are fed into the cirtic acid cycle as a...
9) Why store energy as fat? Determine the NET yield of ATP from the complete oxidation of one molecule of the fatty acid stearic acid (18:0) to Co, as compared to the complete oxidation of the 18 total carbons in 3 molecules of glucose. On an ATP/carbon basis, how much more efficient in percent), is the oxidation of fats than carbohydrates for providing energy to the cell? Show your work for each part. (8 points) Net ATP yield of stearic...
Which of the following statements is not true? Glycolysis produces most of the ATP required by aerobic organisms like us Glycolysis produces pyruvate, which is consumed by the Krebs cycle Glycolysis occurs in the cytosol of the cell Glycolysis is the first stage of cellular respiration • The Krebs cycle reactions Takes place in the cytoplasm Converts glucose to pyruvate Generate ATP with the help of an enzyme complex called ATP synthase Yield ATP, NADH, and FADH2 • Which of...
2a. What is the net yield of ATP from 1 glucose molecule metabolized anaerobically to lactate? b. Why is the end product of anaerobic glycolysis in cells lactate, rather than pyruvate?
20. Inhibition of the enzyme malate dehydrogenase (MDH) from Plasmodium falciparum is a potential novel treatment for malaria. MDH catalyzes the conversion of malate to oxaloacetate. Which metabolic pathway in P. falciparum will be directly affected if MDH is inhibited? a. Glycolysis b. The electron transport chain c. The citric acid cycle d. Alcohol fermentation 21. Which of the following compounds has the greatest amount of energy for a cell? a. CO b. ATP C. Glucose d. Lactic acid e....
20. Inhibition of the enzyme malate dehydrogenase (MDH) from Plasmodium falciparum is a potential novel treatment for malaria. MDH catalyzes the conversion of malate to oxaloacetate. Which metabolic pathway in P. falciparum will be directly affected if MDH is inhibited? a. Glycolysis b. The electron transport chain c. The citric acid cycle d. Alcohol fermentation 21. Which of the following compounds has the greatest amount of energy for a cell? a. CO b. ATP C. Glucose d. Lactic acid e....
7) Why do hydrolysis reactions occur more readily in solution than dehydration reactions? A) Hydrolysis reactions increase G, or Gibbs free energy of the system, B) Hydrolysis reactions are endergonic and increase entropy of the system. C) Hydrolysis reactions are exergonic and decrease entropy of the system. D) Hydrolysis reactions are exergonic and increase entropy of the system. 8) How do cells use the ATP cycle illustrated in the figure? AAA W A) Cells use the cycle to recycle ADP...
4. For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Not all words or phrases will be used; each word or phrase can be used more than once. (2 point each; 34 points total) ADP lysosome oxidation phosphorylation NAD pyruvate plasma membrane oxidative phosphorylation acetyl CoA cytosol carbon dioxide nucleus NADH sucrose ubiquitination GTP electrons FADH2 reduction B-sheets matrix ATP FAD kinase vacuole H* mitochondria NADH inner membrane...
YOU MUST ANSWER THE FOLLOWING QUESTIONS ON YOUR OWN PRIOR TO CLASS REVIEW! 1. Label the path of electrons through the light reactions of photosynthesis using the illustration below. A. Include PSII and PSI and label all the complexes involved i. Which complex pushes H* across the membrane? ii. Where do these electrons end up? iii. What is the purpose of splitting H2O? iv. Where do the light reactions take place? 2H2D Ot ENR NAOD ADP photolyetemi photosyetemi wlochtone be-...
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