Green sulfur bacteria are nonmotile but can control their depth by using gas vesicles to control buoyancy.

Question

Quizplus · Accepted Answer

This statement is true. Green sulfur bacteria are nonmotile, meaning they cannot move on their own, but they can control their depth in water by using gas vesicles. These vesicles are filled with gas that allows the bacteria to adjust their buoyancy and move up or down in the water column to access optimal light and nutrient conditions.

Green Sulfur Bacteria Are Nonmotile but Can Control Their Depth