Multiple Choice
Which of the following inclusion bodies contain iron?
7. Prokaryotic Cell Structures & Functions
Cell Inclusions
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Which of the following statements about gas vesicles is TRUE?
A
Bacteria use them to align with the Earth's magnetic field.
B
They store phosphate molecules as granules.
C
They are used to control the cell's buoyancy in aquatic environments.
D
They are the site of Carbon fixation.
E
None of the above are true.
Verified step by step guidance1
Understand the function of gas vesicles in bacteria. Gas vesicles are protein-bound structures that provide buoyancy to aquatic microorganisms, allowing them to position themselves optimally in the water column.
Eliminate options that do not align with the known function of gas vesicles. For example, gas vesicles are not involved in aligning with the Earth's magnetic field, storing phosphate molecules, or being sites of carbon fixation.
Recognize that the primary role of gas vesicles is related to buoyancy control, which helps bacteria maintain their position in water to access light and nutrients effectively.
Consider the statement 'They are used to control the cell's buoyancy in aquatic environments' as the most accurate description of the function of gas vesicles.
Conclude that the statement about controlling buoyancy is true, as it directly relates to the known function of gas vesicles in aquatic bacteria.
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