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

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

Which microorganism is responsible for the production of lactic acid in fermentation?

A. Lactobacillus
B. Saccharomyces cerevisiae (brewer's yeast)
C. Clostridium butyricum
D. Escherichia coli (E. coli)

What is the primary role of bacteriophages in microbiology?

A. Viruses that infect bacteria
B. Bacteria that infect viruses
C. Fungi that infect bacteria
D. Protozoa that infect bacteria

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

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

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 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

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

A. Protection from immune defenses
B. Nutrient absorption
C. Facilitates cell division
D. Enhances cellular respiration

Which microorganism is used in the production of vinegar?

A. Acetobacter
B. Lactobacillus
C. Clostridium acetobutylicum
D. Escherichia coli (E. coli)