Medical Quiz

Topics: 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

Select your answer:
     


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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