Homework Answers
Bacteria have their ATP synthesis machinery on their membranes. Sometimes membrane invaginations such as Mesosomes help to increase the membrane surface to accommodate ATP synthesis machinery. Just like in mitochondria, reduced equivalents are oxidized at the membrane and bacteria synthesize ATP by creating proton gradient in the intermembrane space and allowing protons to pass through ATP synthase.
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2. As you learned, membranes impermeable to hydrogen ions are required for electron transfer phosphorylation. Membranes...
is required to accept electron 17. At the very end of the electron transport chain in...
is required to accept electron 17. At the very end of the electron transport chain in the mitochondria, final electron acceptor. A. carbon dioxide B. ADP C. ATP Synthase Doxygen E. NAD+ 18. Select the correct flow of energy transfer during cellular respiration. A. NADHH gradient glucose → ATP B glucose → NADH H gradient ATP C. glucose H gradient → NADH ATP D. glucose ATPH gradient → NADH 19. If a muscle cell has low levels of oxygen, which...
You have learned that proton motive force is important in movement of ions across membranes. Both...
You have learned that proton motive force is important in movement of ions across membranes. Both proton motive force and protons in general are crucial in the function of light reactions. Please explain the source of protons and how they used in the light reactions.
PLEASE ANSWER ALL PARTS. THANK YOU! 11. (13 pts) Electron transfer Electron transfer translocates protons from...
PLEASE ANSWER ALL PARTS. THANK YOU!
11. (13 pts) Electron transfer Electron transfer translocates protons from the mitochondrial matrix to the external medium, establishing a pH gradient across the inner membrane (outside more acidic than inside). The tendency of protons to diffuse back into the matrix is the driving force for ATP synthesis by ATP synthase. During oxidative phosphorylation by a suspension of mitochondria in a medium of pH 6.9, the pH of the matrix has been measured as 7.7....
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,...
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-...
Your classmate is excited to tell you about something they just learned. There’s a toxin named...
Your classmate is excited to tell you about something they just learned. There’s a toxin named ouabain that was used by East Africans to make poison arrows. “And guess what-ouabain kills people by blocking the sodium/potassium pump that we learned about in BILD 1!” But your classmate is confused about something. “The sodium/potassium pump moves sodium and potassium ions against the concentration gradients, in the opposite direction of how the ions would normally go. But in class we said that...
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...
Cellular Metabolism Lab We will walk through the steps of Cellular Respiration in this activity. Please...
Cellular Metabolism Lab We will walk through the steps of Cellular Respiration in this activity. Please do not skip ahead or leave out steps. Fully taking the time to cut out, arrange the shapes, and answer the attached questions will help you to gain a deeper understanding of cellular respiration (the process of making energy, ATP, the major contributor to our overall metabolism). Pages 941-948 in you TEXTBOOK should help you answer the questions. Grading Notes: You can either 1)...
4. Inspired by the natural design of cell membranes, you have invented a strange new semi-permeable...
4. Inspired by the natural design of cell membranes, you have invented a strange new semi-permeable membrane consisting of a water-impemeable base layer interspersed with hydrophilic transmembrane glycoproteins which form three types of channels. Channel type 'A' is approx imately 3 angstroms in diameter and lined with negative charges Channel type 'B' is approximately 3 angstroms in diameter also but lined with positive charges Channel type C is approximately 4 angstroms in diameter and electrically neutral This membrane separates two...
please answer all. thanks. 67. * Nor involved here respiration SO or 72.> ATĚ when glucose...
please answer all. thanks.
67. * Nor involved here respiration SO or 72.> ATĚ when glucose is coinpletely oxidited to CO2H2O? The major purpose of Ozg) in aerobie respiration lor of reducing pyruvate* in anaerobie respiration is a) to phosphorylate the maximum number of ATP molecules b) regenerate NAD so the processes may Continue (c) allow for the replacement of Ho molecules that are split (d) mobilize succeeding glucose molewles glycolysis can continue 68. Carbon dioxide during which one or...
is required to accept electron 17. At the very end of the electron transport chain in the mitochondria, final electron acceptor. A. carbon dioxide B. ADP C. ATP Synthase Doxygen E. NAD+ 18. Select the correct flow of energy transfer during cellular respiration. A. NADHH gradient glucose → ATP B glucose → NADH H gradient ATP C. glucose H gradient → NADH ATP D. glucose ATPH gradient → NADH 19. If a muscle cell has low levels of oxygen, which...
PLEASE ANSWER ALL PARTS. THANK YOU!
11. (13 pts) Electron transfer Electron transfer translocates protons from the mitochondrial matrix to the external medium, establishing a pH gradient across the inner membrane (outside more acidic than inside). The tendency of protons to diffuse back into the matrix is the driving force for ATP synthesis by ATP synthase. During oxidative phosphorylation by a suspension of mitochondria in a medium of pH 6.9, the pH of the matrix has been measured as 7.7....
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,...
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-...
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...
4. Inspired by the natural design of cell membranes, you have invented a strange new semi-permeable membrane consisting of a water-impemeable base layer interspersed with hydrophilic transmembrane glycoproteins which form three types of channels. Channel type 'A' is approx imately 3 angstroms in diameter and lined with negative charges Channel type 'B' is approximately 3 angstroms in diameter also but lined with positive charges Channel type C is approximately 4 angstroms in diameter and electrically neutral This membrane separates two...
please answer all. thanks.
67. * Nor involved here respiration SO or 72.> ATĚ when glucose is coinpletely oxidited to CO2H2O? The major purpose of Ozg) in aerobie respiration lor of reducing pyruvate* in anaerobie respiration is a) to phosphorylate the maximum number of ATP molecules b) regenerate NAD so the processes may Continue (c) allow for the replacement of Ho molecules that are split (d) mobilize succeeding glucose molewles glycolysis can continue 68. Carbon dioxide during which one or...
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