Chapter 10

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The pH of the inner thylakoid space has been measured, as have the pH of the stroma and of the cytosol of a particular plant cell. Which, if any, relationship would you expect to find?
a. The pH within the thylakoid is less than that of the stroma.
b. The pH of the stroma is higher than that of the other two measurements.
c. The pH of the stroma is higher than that of the thylakoid space but lower than that of the cytosol.
d. The pH of the thylakoid space is higher than that anywhere else in the cell.
e. There is no consistent relationship.

Answer:
A: The pH within the thyalkoid is less than that of the stroma.

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