question What is the primary role of microorganisms in the sulfur 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 organic nitrogen compounds to nitrate in the nitrogen cycle?

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

Which microorganism is responsible for the production of beer?

A. Saccharomyces cerevisiae (brewer's yeast)
B. Lactobacillus
C. Streptococcus pyogenes
D. Pseudomonas aeruginosa

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 function of the nucleoid in bacterial cells?

A. Contains the bacterial chromosome
B. Synthesizes cellular ATP
C. Initiates DNA replication
D. Facilitates protein synthesis

What is the primary function of the CRISPR-Cas system in microbiology?

A. Defense against viral infections
B. Nutrient absorption
C. Antibiotic production
D. Cell division regulation

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 tricarboxylic acid (TCA) cycle?

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

What is the primary function of the immune system in the human body?

A. Defending against pathogens
B. Producing digestive enzymes
C. Synthesizing hormones
D. Facilitating blood circulation

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

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