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

Which microorganism is responsible for the production of antibiotics such as amphotericin B?

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

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

A. Conversion of nitrogen between different forms
B. Photosynthesis
C. Cellular respiration
D. Synthesis of amino acids

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

A. Conversion of sulfur between different forms
B. Nitrogen fixation
C. Photosynthesis
D. Cellular respiration

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

A. Conversion of sulfur between different forms
B. Nitrogen fixation
C. Photosynthesis
D. Cellular respiration

What is the primary mode of nutrition in fungi?

A. Heterotrophic
B. Autotrophic
C. Mixotrophic
D. Parasitic

What is the primary function of the microtubules in eukaryotic microbial cells?

A. Cellular support and transport
B. Synthesis of proteins
C. DNA replication
D. Cell wall formation

Which process involves the conversion of nitrate to nitrogen gas in the nitrogen cycle?

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

What is the primary role of viruses in microbiology?

A. Infecting host cells and replicating
B. Decomposing organic matter
C. Producing antibiotics
D. Facilitating nutrient absorption

Which microorganism is responsible for the production of citric acid in the citric acid cycle (Krebs cycle)?

A. Acetobacter aceti
B. Saccharomyces cerevisiae (brewer's yeast)
C. Aspergillus niger
D. Escherichia coli (E. coli)

Which microorganism is responsible for the production of antibiotics such as cephalosporins?

A. Cephalosporium spp.
B. Bacillus anthracis
C. Pseudomonas aeruginosa
D. Escherichia coli (E. coli)