question Which microorganism is responsible for the production of antibiotics such as chloramphenicol

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 function of the plasmid in bacterial cells?

A. Carries extra-chromosomal genes
B. Synthesizes cellular ATP
C. Initiates DNA replication
D. Facilitates protein synthesis

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)

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 function of the cytoplasmic membrane in bacterial cells?

A. Selective permeability
B. Nutrient absorption
C. Protection from desiccation
D. Synthesis of cellular ATP

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)

Which process involves the conversion of atmospheric nitrogen into ammonia?

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

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

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

What is the primary function of the mesosome in bacterial cells?

A. Cellular respiration
B. DNA replication
C. Protein synthesis
D. Cell division regulation