Homework Answers
1. It is very important that during oxidative phosphorylation the inner mitochondrial membrane remains intact. If there will be gaps in between the membrane, then there will be leakage of protons. During electron transport chain, when electrons are transported from one electron carrier to the other, protons are also pumped from mitochondrial Matrix to intermembrane space. If there is gap between inner mitochondrial membrane, then Proton will leak. This will disrupt the whole Proton gradient. And then there will be no generation of ATP. The electrochemical energy stored in Proton gradient is used by ATP synthase enzyme for the synthesis of ATP.
2. If the polarity of electron transport proteins is randomised, then oxidative phosphorylation will not take place. Electron transfer proteins are located on the membrane in such a way that they always transfer electron from one electron carrier to the other, all of which are arranged in increasing order of their electrode potential. They are arranged so because the highest electrode potential is that of oxygen which finally accepts the electron to form water. Also the electron Carriers are arranged so that they always pump protons from mitochondrial Matrix into intermembrane space to create a Proton gradient. If the polarity of electron transport protein is randomised, then Water will not be formed and because of destruction of proton gradient ATP will not also be formed.
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Can i get help with 1 and 2?
1. It is essential for oxidative phosphorylation that...
Inhibitors of Oxidative Phosphorylation The following chemicals inhibit oxidative phosphorylation: Cyanide: Cyanide is a naturally occurring...
Inhibitors of Oxidative Phosphorylation The following chemicals inhibit oxidative phosphorylation: Cyanide: Cyanide is a naturally occurring compound that binds to protein complex IV of the mitochondrial electron transport chain and prevents transfer of electrons from the protein. Metformin: At the cellular level, chemically synthesized metformin, a drug commonly prescribed for Type 2 diabetes, inhibits mitochondrial respiration by blocking complex I. Dinitrophenol: Dinitrophenol is a metabolic poison that can be sold legally as a pesticide. Although it is lethal to humans,...
Can I get some help with question 1. a and b please? Uncouplers of oxidative phosphorylation...
Can I get some help with question 1. a and b please?
Uncouplers of oxidative phosphorylation in mitochondria inhibit the coupling between the electron transport and phosphorylation reactions and thus inhibit ATP synthesis without affecting the respiratory chain and ATP synthase (H(+)-ATPase). Miscellaneous compounds are known to be uncouplers, but weakly acidic uncouplers are representative because they show very potent activities. The most potent uncouplers discovered so far are the hindered phenol SF 6847, and hydrophobic salicylanilide S-13, whic are...
Which of the following statements is(are) TRUE about oxidative phosphorylation? 1. Electron transport provides energy to...
Which of the following statements is(are) TRUE about oxidative phosphorylation? 1. Electron transport provides energy to pump protons into the intermembrane space. II. An electrochemical gradient is formed across the inner mitochondrial membrane. III. Potassium and sodium ions form an ionic gradient across the inner mitochondrial membrane. IV. Complexes I, II, III, IV actively transport protons into the intermembrane space during electron transport 1, II, III, IV III, IV II, III, IV 1,1V II, IV
C. Considering Electron Transport: In LA3 Video 3, we are considering electron transport and oxidative phosphorylation....
C. Considering Electron Transport: In LA3 Video 3, we are considering electron transport and oxidative phosphorylation. Please answer the following multiple choice questions (0.5 pts each) and follow instructions for two final drawings (2 pts each). 1. The electrons involved in electron transport come from (A) glycolysis (B) the pyruvate dehydrogenase complex (C) the citric acid cycle (D) all three processes 2. When NADH and FADH2 transfer their electrons to the electron transport chain, they are (A) oxidized (B) epimerized...
can I get some help with question 1. c and d please? ViewHelp Uncouplers of oxidative...
can I get some help with question 1. c and d please?
ViewHelp Uncouplers of oxidative phosphorylation in mitochondria inhibit the coupling between the electron transport and phosphorylation reactions and thus inhibit ATP synthesis without affecting the respiratory chain and ATP synthase (H(+)-ATPase). Miscellaneous compounds are known to be uncouplers, but weakly acidic uncouplers are representative because they show very potent activities. The most potent uncouplers discovered so far are the hindered phenol SF 6847, and hydrophobic salicylanilide S-13, whic...
21) Which process in eukaryotic cells will normally proceed whether O2 is present or absent? A)...
21) Which process in eukaryotic cells will normally proceed whether O2 is present or absent? A) oxidative phosphorylation B) glycolysis C) Krebs cycle D) electron transport 22) The direct energy source that drives ATP synthesis during respiratory oxidative phosphorylation is A) thermodynamically favorable transfer of phosphate from glycolysis and Krebs cycle intermediate molecules of ADP. B) the thermodynamically favorable flow of electrons from NADH to the mitochondrial electron transport carriers. C) the final transfer of electrons to oxygen. D) the...
1. Why do fats provide more energy per molecule than glucose? Explain your answer in terms...
1. Why do fats provide more energy per molecule than glucose? Explain your answer in terms of the electrons extracted during the process of cellular respiration. 2. A rare, frameshift genetic mutation can alter the structure of the Pyruvate Dehydrogenase Complex such that it no longer functions within the cell. Describe what parts of the process of cellular respiration would be impacted due to this non- functional enzyme. 3. The citric acid cycle functions to completely oxidize glucose in the...
QUESTION 1 Which of the following options lists the stages in cellular respiration in the correct...
QUESTION 1 Which of the following options lists the stages in cellular respiration in the correct order? A. glycolysis, oxidative phosphorylation, pyruvate oxidation, and the citric acid cycle B glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation C. pyruvate oxidation, oxidative phosphorylation, glycolysis, and the citric acid cycle D. the citric acid cycle, oxidative phosphorylation, pyruvate oxidation, and glycolysis QUESTION 2 When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the glucose...
1. Compare and contrast oxidative phosphorylation and the citric acid cycle. (20 pts total) 1 i)...
1. Compare and contrast oxidative phosphorylation and the citric acid cycle. (20 pts total) 1 i) Explain how they are similar in location, and how they are different in location. (10 pts) 1 li) Other than being a component of cellular respiration explain how they are similar in function, and how they are different in function. (10 pts) 2. When you lose weight, where does the carbon go that was in your fat? (20 pts) 3. Aerobic cellular respiration requires...
Cellular respiration: The Electron Transport Chain The breakdown of glucose ends during the Krebs cydle; however,...
Cellular respiration: The Electron Transport Chain The breakdown of glucose ends during the Krebs cydle; however, it is important to note that the energy previously contained in glucose is mostly stored in NADH and FADHz. In the last step of celular respiration, the high-energy electrons within NADH and FADH2 are passed within a set of proteins found in the inner membrane of the mitochondrion, collectively known as the electron transport chain. The electrons provide the energy to create ATP, which...
Inhibitors of Oxidative Phosphorylation The following chemicals inhibit oxidative phosphorylation: Cyanide: Cyanide is a naturally occurring compound that binds to protein complex IV of the mitochondrial electron transport chain and prevents transfer of electrons from the protein. Metformin: At the cellular level, chemically synthesized metformin, a drug commonly prescribed for Type 2 diabetes, inhibits mitochondrial respiration by blocking complex I. Dinitrophenol: Dinitrophenol is a metabolic poison that can be sold legally as a pesticide. Although it is lethal to humans,...
Can I get some help with question 1. a and b please?
Uncouplers of oxidative phosphorylation in mitochondria inhibit the coupling between the electron transport and phosphorylation reactions and thus inhibit ATP synthesis without affecting the respiratory chain and ATP synthase (H(+)-ATPase). Miscellaneous compounds are known to be uncouplers, but weakly acidic uncouplers are representative because they show very potent activities. The most potent uncouplers discovered so far are the hindered phenol SF 6847, and hydrophobic salicylanilide S-13, whic are...
Which of the following statements is(are) TRUE about oxidative phosphorylation? 1. Electron transport provides energy to pump protons into the intermembrane space. II. An electrochemical gradient is formed across the inner mitochondrial membrane. III. Potassium and sodium ions form an ionic gradient across the inner mitochondrial membrane. IV. Complexes I, II, III, IV actively transport protons into the intermembrane space during electron transport 1, II, III, IV III, IV II, III, IV 1,1V II, IV
C. Considering Electron Transport: In LA3 Video 3, we are considering electron transport and oxidative phosphorylation. Please answer the following multiple choice questions (0.5 pts each) and follow instructions for two final drawings (2 pts each). 1. The electrons involved in electron transport come from (A) glycolysis (B) the pyruvate dehydrogenase complex (C) the citric acid cycle (D) all three processes 2. When NADH and FADH2 transfer their electrons to the electron transport chain, they are (A) oxidized (B) epimerized...
can I get some help with question 1. c and d please?
ViewHelp Uncouplers of oxidative phosphorylation in mitochondria inhibit the coupling between the electron transport and phosphorylation reactions and thus inhibit ATP synthesis without affecting the respiratory chain and ATP synthase (H(+)-ATPase). Miscellaneous compounds are known to be uncouplers, but weakly acidic uncouplers are representative because they show very potent activities. The most potent uncouplers discovered so far are the hindered phenol SF 6847, and hydrophobic salicylanilide S-13, whic...
21) Which process in eukaryotic cells will normally proceed whether O2 is present or absent? A) oxidative phosphorylation B) glycolysis C) Krebs cycle D) electron transport 22) The direct energy source that drives ATP synthesis during respiratory oxidative phosphorylation is A) thermodynamically favorable transfer of phosphate from glycolysis and Krebs cycle intermediate molecules of ADP. B) the thermodynamically favorable flow of electrons from NADH to the mitochondrial electron transport carriers. C) the final transfer of electrons to oxygen. D) the...
1. Why do fats provide more energy per molecule than glucose? Explain your answer in terms of the electrons extracted during the process of cellular respiration. 2. A rare, frameshift genetic mutation can alter the structure of the Pyruvate Dehydrogenase Complex such that it no longer functions within the cell. Describe what parts of the process of cellular respiration would be impacted due to this non- functional enzyme. 3. The citric acid cycle functions to completely oxidize glucose in the...
QUESTION 1 Which of the following options lists the stages in cellular respiration in the correct order? A. glycolysis, oxidative phosphorylation, pyruvate oxidation, and the citric acid cycle B glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation C. pyruvate oxidation, oxidative phosphorylation, glycolysis, and the citric acid cycle D. the citric acid cycle, oxidative phosphorylation, pyruvate oxidation, and glycolysis QUESTION 2 When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the glucose...
1. Compare and contrast oxidative phosphorylation and the citric acid cycle. (20 pts total) 1 i) Explain how they are similar in location, and how they are different in location. (10 pts) 1 li) Other than being a component of cellular respiration explain how they are similar in function, and how they are different in function. (10 pts) 2. When you lose weight, where does the carbon go that was in your fat? (20 pts) 3. Aerobic cellular respiration requires...
Cellular respiration: The Electron Transport Chain The breakdown of glucose ends during the Krebs cydle; however, it is important to note that the energy previously contained in glucose is mostly stored in NADH and FADHz. In the last step of celular respiration, the high-energy electrons within NADH and FADH2 are passed within a set of proteins found in the inner membrane of the mitochondrion, collectively known as the electron transport chain. The electrons provide the energy to create ATP, which...
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