Question

Which of the following statement(s) is (are) true of V-class proton pumps?

A. They are ATPases.
B. They are present in membranes of plant vacuoles.
C They serve to lower the pH inside a lysosome.
D. all of the above

Answer 1

The correct option is D. all of the above. V-class proton pumps are ATPases found in plant vacuole membranes and work to lower lysosomal pH, hence all provided statements are true.

Step-by-step explanation:

V-class proton pumps are essential components involved in various cellular processes. The statements provided are all accurate regarding V-class proton pumps:

A) They are ATPases, which means they use energy derived from the hydrolysis of ATP to pump protons. B) They are indeed present in the membranes of plant vacuoles, where they help maintain the proper pH for vacuolar functions. C) V-class proton pumps also work to lower the pH inside lysosomes, allowing the enzymes inside to function optimally at an acidic pH. Therefore, the correct answer is D. all of the above.