Question Detail
Question
Which of the following membranes in organelles is single and contain proton pumps? A. Nucleus B. Lysosome C. Mitochondrion D. Chloroplast
Correct Answer
Option B is the correct answer.
Detailed Explanation
Lysosomes are bound by a single membrane. This membrane contains proton pumps (V-type ATPases) that actively pump H+ ions into the lysosome's interior. This process acidifies the lumen, creating the low pH environment required for the optimal activity of the hydrolytic enzymes inside.
Hint
This single-membrane organelle needs to be acidic inside, so it pumps protons in.