question What is the primary function of microorganisms in the nitrogen cycle

Which microorganism is used in the production of antibiotics such as tetracycline?

A. Streptomyces aureofaciens
B. Bacillus anthracis
C. Pseudomonas aeruginosa
D. Escherichia coli (E. coli)

Which process involves the conversion of ammonia to nitrite in the nitrogen cycle?

A. Nitrification
B. Nitrogen fixation
C. Denitrification
D. Ammonification

What is the primary function of the periplasmic space in bacterial cells?

A. Houses enzymes for nutrient processing
B. Facilitates motility
C. Protects against desiccation
D. Synthesizes cellular ATP

What is the primary role of microorganisms in the process of bioremediation?

A. Breakdown of pollutants and contaminants
B. Production of toxins
C. Disruption of ecosystems
D. Inhibition of plant growth

Which microorganism is used in the production of antibiotics such as streptomycin?

A. Streptomyces griseus
B. Bacillus anthracis
C. Pseudomonas aeruginosa
D. Escherichia coli (E. coli)

What is the primary function of the endoplasmic reticulum in eukaryotic microbial cells?

A. Synthesis of proteins and lipids
B. ATP synthesis
C. DNA replication
D. Cell wall formation

What is the primary role of microorganisms in the carbon cycle?

A. Decomposition of organic matter
B. Nitrogen fixation
C. Denitrification
D. Photosynthesis

Which microorganism is responsible for the production of penicillinase, an enzyme that degrades penicillin?

A. Staphylococcus aureus
B. Escherichia coli (E. coli)
C. Streptococcus pyogenes
D. Bacillus subtilis

Which microorganism is responsible for the formation of biofilms in dental plaque?

A. Streptococcus mutans
B. Escherichia coli (E. coli)
C. Candida albicans
D. Mycobacterium tuberculosis