You are studying the process of oxidative phosphorylation in the lab.You isolate several mitochondria from cells and place them in a buffered solutionwith a low pH and observe that the mitochondria begin to synthesize ATP.Which of the following is the best explanation for this observation?FIt increases the conc. of OH-, causing the mitochondria to pump H+ to theintermembrane space.It increases the diffusion of H+ from the mitochondrial matrix to theintermembrane space.It increases the diffusion of H+ from the intermembrane space to the matrix.It increases the conc. of OH- in the mitochondrial matrix.

Mitochondria is also known as the powerhouse of the cell.

You are studying the process of oxidative phosphorylation in the lab. You isolate several mitochondria from cells and place them in a buffered solution with a low pH and observe that the mitochondria begin to synthesize ATP. Which of the following is the best explanation for this observation? It increases the conc. of OH-, causing the mitochondria to pump H+ to the intermembrane space. It increases the diffusion of H+ from the mitochondrial matrix to the intermembrane space. It increases the diffusion of H+ from the intermembrane space to the matrix. It increases the conc. of OH- in the mitochondrial matrix.

You are studying the process of oxidative phosphorylation in the lab. You isolate several mitochondria from cells and place them in a buffered solution with a low pH and observe that the mitochondria begin to synthesize ATP. Which of the following is the best explanation for this observation? It increases the conc. of OH-, causing the mitochondria to pump H+ to the intermembrane space. It increases the diffusion of H+ from the mitochondrial matrix to the intermembrane space. It increases the diffusion of H+ from the intermembrane space to the matrix. It increases the conc. of OH- in the mitochondrial matrix.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter4: How Cells Obtain Energy

Section: Chapter Questions

Problem 2ACQ: Figure 4.15 Cyanide inhibits cytochrome c oxidase, a component of the electron transport chain. If...

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The mitochondrion pumps H+ from the matrix into the intermembrane space. Which region is more acidic, the matrix or the intermembrane space? Why?
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Which of the following statements concerning the complete oxidation of FADH2 in the electron transport chain is NOT true? a. In the final step, electrons from cytochrome c to O2 reducing it to H2O in complex IV, and four protons are transported from the intermembrane space to the matrix. b. In the first step, electrons from FADH2 are transferred in complex II to ubiquinone, which does not transport any proton across the inner mitochondrion membrane. c. In the second step, complex III transfers the electrons from ubiquinone to cytochrome c, and four protons are transported from the matrix to the intermembrane space. d. The complete oxidation of FADH2 causes transfer of 6 protons and yields two ATP.
Cyanide is a toxic substance. Cyanide is a cytochrome coxidase enzyme that is competitive. The last enzyme of the electron transport chain in mitochondria is cytochrome c oxidase. One of the most common substrates for cytochrome c oxidase is oxygen. Would an increase in the concentration of oxygen affect the inhibitioncaused by cyanide? How would conditions in the mitochondrial intermembrane spacechange if cytochrome c oxidase and the electron transport chain are notfunctioning properly. .Explain why this change in conditions will be harmful to a cell.
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The last part of cellular respiration is called oxidative phosphorylation. We use the term oxidativehere because..
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