The rotor portion of the ATP synthase is composed of 10-14 subunits called "c subunits." As...
The rotor portion of the ATP synthase is composed of 10-14 subunits called "c subunits." As protons bind the rotor, on the intermembrane space side of the rotor, the rotor turns one subunit worth of distance. If the rotor of ATP synthase is composed of 10 c subunits, how many protons would be necessary to produce 6 ATP molecules?
Homework Answers
one rotor contains 10 subunits.
The production of every 3 ATP molecules by chmiosmosis needs 8 protons. So, for the production of 1 ATP, 2.66 protons (8protons / 3ATP) are needed.
Here for 6ATP molecules, 5.32 protons are needed. And the rotor turns 6 times for 6ATP molecules.
(The questions does not say how many protons turns the rotor one subunit and how many ATPs are produced from one turning, thus the values from chemiosmosis were implemented for calculation).
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The rotor portion of the ATP synthase is composed of 10-14
subunits called "c subunits." As...
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Imagine a new organism with 4 c subunits in the Fo portion of ATP synthase. (a) Assuming the rest of metabolism and the ETC are the same as in known organisms, how many ATP are produced per NADH oxidized? (b) Describe, in qualitative terms, the relationship between the amount of ATP synthesized per NADH oxidized and the number of c subunits in ATP synthase (i.e. if there are fewer subunits, what does that do to the number of ATP molecules...
A representation of the structure of the mitochondrial ATP synthase is presented in Figure 2 of...
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26. Place the following statements for the production of ATP by ATP synthase in order: 1....
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The Fo stalk component of ATP synthase is named such because it is rendered useless by...
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Q2. The release of ATP by the beta subunit is most directly dependent on: Select ONE...
Q2.
The release of ATP by the beta subunit is most directly
dependent on:
Select ONE option:
1. the flow of protons from the intermembrane space to the
matrix.
2. the rotation of the c-ring in the membrane.
3. the passage of electrons along the electron transport
chain.
4. a conformational change in the beta subunit.
Q3.
What defines the direction of rotation of the c-ring in the F0
complex?
(Select ALL that apply.)
1. Amino acids side chains in...
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26. Place the following statements for the production of ATP by ATP synthase in order: 1. The subunit binds ADP and Pi. II. The H+ binds to an acidic amino acid side chain and the cring rotates. III. The Tsubunit forces ADP and Pi together to form ATP. IV. The L subunit trap ADP and Pi in the active site. V. The gamma subunit linked to the c-ring rotates. VI. A H+ moves from the intermembrane space into a c...
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Imagine that you've just discovered a new microbe with an ATP synthase that is very efficient. As such, it takes only 2 H+ to make 3 ATP molecules. Now you want to know-how many ATP molecules will this organism produce when it completely oxidizes 1 molecule of glucose? Assume that 10 protons are pumped across the inner membrane for every NADH molecule, while 6 protons are pumped for every FADH2. How many ATP molecules would this organism produce when it...
Q2.
The release of ATP by the beta subunit is most directly
dependent on:
Select ONE option:
1. the flow of protons from the intermembrane space to the
matrix.
2. the rotation of the c-ring in the membrane.
3. the passage of electrons along the electron transport
chain.
4. a conformational change in the beta subunit.
Q3.
What defines the direction of rotation of the c-ring in the F0
complex?
(Select ALL that apply.)
1. Amino acids side chains in...
9. Oxidative phosphorylation involves the ATP synthase enzyme being "turned on" by to make ATP a) phosphate being transferred directly to ADP from a substrate b) protons being stripped from water c) electrons passed along cytochromes d) protons moving from one side of the membrane to the other e) protons being passed along cytochromes 10. When the body depletes its supply of oxygen through aerobic respiration, lactic acid fermentation may occur to provide energy. As a byproduct, lactic acid (serum...
please label important parts.
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