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

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 microorganisms in the phosphorus cycle?

A. Recycling of phosphorus in ecosystems
B. Nitrogen fixation
C. Photosynthesis
D. Cellular respiration

Which process involves the conversion of atmospheric nitrogen into ammonia?

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

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

A. Cellular uptake of substances
B. Synthesis of proteins
C. DNA replication
D. Cell wall formation

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

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

What is the primary role of the glycocalyx in bacterial cells?

A. Protection and adherence
B. Nutrient absorption
C. Facilitates cellular respiration
D. Synthesis of cellular ATP

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)

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

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

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

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)