Which of the following describes the direction of proton movement relative to el

Question

Which of the following describes the direction of proton movement relative to electron transfer and phosphorylation?

Select one:
A. Electron transfer pumps protons out of the matrix. As the protons reenter through the ATP synthase, ATP is produced in the matrix.
B. Electron transfer pumps protons into the matrix. As the protons leave the matrix through the ATP synthase, ATP is produced in the matrix
C. Electron transfer pumps protons into the matrix. As the protons leave the matrix through the ATP synthase, ATP is produced on the opposite side of the membrane.

How many net ATP molecules are produced upon the reoxidation NADH and FADH2 in the electron transport chain?

Select one:
A. Two ATP are produced for each NAD+ formed and three ATP are produced for each FAD formed.
B. 2.5 ATP are produced for each NAD+ formed and 1.5 ATP are produced for each FAD formed.
C. Three ATP are produced for each NAD+ formed and two ATP are produced for each FAD formed.
D. 1.5 ATP are produced for each NAD+ formed and 2.5 ATP are produced for each FAD formed.

What is the reaction of ATP synthase?

Select one:
ADP3- + HPO42- + 2H+ ? ATP4- + H2O
AMP3- + 2 HPO42- + 2H+ ? ATP4- + H2O
AMP3- + 2 HPO42- + H+ ? ATP4- + H2O
ADP3- + HPO42- + H+ ? ATP4- + H2O

Explanation / Answer

The correct choice is:

B. Electron transfer pumps protons into the matrix. As the protons leave the matrix through the ATP synthase, ATP is produced in the matrix

C. Three ATP are produced for each NAD+ formed and two ATP are produced for each FAD formed

D. ADP3- + HPO42- + H+ ---> ATP4- + H2O

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