The majority of the proton-motive force in mitochondria is expressed as a voltage. In contrast, the...
The majority of the proton-motive force in mitochondria is expressed as a voltage. In contrast, the proton-motive force generated during photosynthesis is almost exclusively expressed as a pH gradient. How can you explain these differences?
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The majority of the proton-motive force in mitochondria is
expressed as a voltage. In contrast, the...
What is proton motive force? What is its importance in biology? It is the force with...
What is proton motive force? What is its importance in biology? It is the force with which protons move in acid-base reactions O It is the force that results in the creation (synthesis) of a high-energy moleculc It is a form of energy that arises due to differences in pH across biological membranes O All of the above only (2) and (3)
In the liver mitochondria, the membrane potential is -0.17 V (negative inside). The pH difference is...
In the liver mitochondria, the membrane potential is -0.17 V (negative inside). The pH difference is -0.5 (pHoutside – pHinside). The charge on a proton is (+1). What is the proton motive force (the amount of energy stored in the gradient)? The Gibbs free energy for the gradient is [96485 X -.17] + [2.303 X 8. 315 X 310 X -0.5] = -19.4 kJ/mol. Please explain the formula and what is the question asking for, Thank you.
QUESTION 1 What is the purpose of the proton motive force? A Powers the phosphorylation of...
QUESTION 1 What is the purpose of the proton motive force? A Powers the phosphorylation of ATP to ADP. B. Powers the phosphorylation of ADP to ATP. C. Powers the production of high energy electron carriers. D. Powers the ability to generate more redox reactions. QUESTION 2 What is the main mechanism of action for oxidative phosphorylation? A uses the free energy of the proton gradient generated as a result of transferring electrons from NADH or FADH2 to O2 by...
Discuss the current model of proton motive force (pmf): how is it generated, what are complexes...
Discuss the current model of proton motive force (pmf): how is it generated, what are complexes involved, what are the electron carriers between complexes, and what reaction(s) are powered by the pmf and how the reaction(s) occur?
Please show your work. I am trying to understand how to work this. The proton motive...
Please show your work. I am
trying to understand how to work this.
The proton motive force in mitochondria (Ap) can be calculated by the equation: Im (2 points) If the inner mitochondrial membrane would become freely permeable to chloride ions, what would be the new Ap? a.
12) A particular allele of a gene (including the wild-type allele) can be expressed in a...
12) A particular allele of a gene (including the wild-type allele) can be expressed in a dominant fashion for several reasons- A) Explain why wild-type alleles are usually dominant to mutant alleles (5 pts.). B) Describe three ways in which mutant alleles can be dominant to a wild-type allele (6 pts.). 13) Explain how chromatids/chromosomes move to opposite poles of the cell during anaphase. Be sure to mention in your answer how the force that propels this movement is generated...
why was it necessary to isolate mitochondria to study and also use engineered vesicles that either...
why was it necessary to
isolate mitochondria to study and also use engineered vesicles that
either did or did not contain atp synthetase?
by the first ATP s r aasing the enzyme to function as an ATPase and result in ATP ATP synthase would likely drive the ATP synh reverse direction, s Original Paper The oniginal experiments on pli and ATP formation were donc on chloroplasts The chemiosmotic generation of ATP is simila to mitochondria, but occurs across tihe thylašoid...
You are conducting typical force-voltage, force-frequency and length-tension experiments on the toad sciatic nerve/gastrocnemius muscle preparation....
You are conducting typical force-voltage, force-frequency and length-tension experiments on the toad sciatic nerve/gastrocnemius muscle preparation. Draw and explain the twitch characteristics, recruitment and length-tension results obtained during these experiments. How might the results differ if SR density was increased?
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....
22. Lipids would produce with the carbohydrate of same weight. energy compared (a) more (b) less...
22. Lipids would produce with the carbohydrate of same weight. energy compared (a) more (b) less c) the same amount 23. Where are the proteins of electron-transport chain located in mitochondria for the cellular respiration? (a) matrix (c) inner membrane (b) outer membrane (d) both membranes 24. The flow of protons during the light reaction of photosynthesis is from thylakoid space to stroma and back to thylakoid space through the ATPase? (a) True (b) False 25. Which of the following...
What is proton motive force? What is its importance in biology? It is the force with which protons move in acid-base reactions O It is the force that results in the creation (synthesis) of a high-energy moleculc It is a form of energy that arises due to differences in pH across biological membranes O All of the above only (2) and (3)
QUESTION 1 What is the purpose of the proton motive force? A Powers the phosphorylation of ATP to ADP. B. Powers the phosphorylation of ADP to ATP. C. Powers the production of high energy electron carriers. D. Powers the ability to generate more redox reactions. QUESTION 2 What is the main mechanism of action for oxidative phosphorylation? A uses the free energy of the proton gradient generated as a result of transferring electrons from NADH or FADH2 to O2 by...
Please show your work. I am
trying to understand how to work this.
The proton motive force in mitochondria (Ap) can be calculated by the equation: Im (2 points) If the inner mitochondrial membrane would become freely permeable to chloride ions, what would be the new Ap? a.
12) A particular allele of a gene (including the wild-type allele) can be expressed in a dominant fashion for several reasons- A) Explain why wild-type alleles are usually dominant to mutant alleles (5 pts.). B) Describe three ways in which mutant alleles can be dominant to a wild-type allele (6 pts.). 13) Explain how chromatids/chromosomes move to opposite poles of the cell during anaphase. Be sure to mention in your answer how the force that propels this movement is generated...
why was it necessary to
isolate mitochondria to study and also use engineered vesicles that
either did or did not contain atp synthetase?
by the first ATP s r aasing the enzyme to function as an ATPase and result in ATP ATP synthase would likely drive the ATP synh reverse direction, s Original Paper The oniginal experiments on pli and ATP formation were donc on chloroplasts The chemiosmotic generation of ATP is simila to mitochondria, but occurs across tihe thylašoid...
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....
22. Lipids would produce with the carbohydrate of same weight. energy compared (a) more (b) less c) the same amount 23. Where are the proteins of electron-transport chain located in mitochondria for the cellular respiration? (a) matrix (c) inner membrane (b) outer membrane (d) both membranes 24. The flow of protons during the light reaction of photosynthesis is from thylakoid space to stroma and back to thylakoid space through the ATPase? (a) True (b) False 25. Which of the following...
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