Multiple Choice
You are looking at a sample from the top green layer of a colorful bacterial mat. Using phase contrast and fluorescence microscopy, you see evenly spaced cells in the middle of a filament that are slightly smaller than the others. The smaller cells are not fluorescent, indicating they lack photosystem II, but the rest of the filament is fluorescent. What type of filamentous bacteria are you most likely looking at?
A) purple nonsulfur bacteria
B) green sulfur bacteria
C) Acidobacteria
D) Cyanobacteria
Correct Answer:
Verified
Correct Answer:
Verified
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