★ Bacterial Growth and Culturing Conditions Quiz
What is the role of nitrogen-fixing bacteria in the nitrogen cycle?
A. They fix carbon dioxide into organic molecules
B. They fix nitrogen gas into ammonia
C. They fix nitrogen gas into oxygen
D. They fix oxygen gas into water
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What happens to bacterial cells in hypertonic environments?
A. They swell
B. They multiply rapidly
C. They shrink
D. They remain the same
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