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

Microbiology

Which microorganism is used in the production of antibiotics such as erythromycin?

A. Saccharopolyspora erythraea
B. Bacillus anthracis
C. Pseudomonas aeruginosa
D. Escherichia coli (E. coli)

Saccharopolyspora erythraea is involved in the production of antibiotics like erythromycin.

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 of the following diseases is caused by a protozoan?

A. Malaria
B. Tuberculosis
C. Influenza
D. Lyme disease

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

A. Decomposition of organic matter
B. Nitrogen fixation
C. Denitrification
D. Photosynthesis

What is the primary mode of transmission of the influenza virus?

A. Respiratory droplets
B. Contaminated water
C. Vector (e.g., mosquito)
D. Sexual contact

Which of the following is an example of a Gram-negative bacterium?

A. Escherichia coli (E. coli)
B. Staphylococcus aureus
C. Bacillus subtilis
D. Clostridium difficile

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

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

Which microorganism is responsible for the production of beer in brewing?

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

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

A. Synthesis of ribosomal RNA
B. Synthesis of proteins
C. DNA replication
D. Cell wall formation

Which microorganism is used in the production of antibiotics?

A. Streptomyces
B. Saccharomyces cerevisiae (brewer's yeast)
C. Penicillium
D. Escherichia coli (E. coli)

What is the primary mode of nutrition in fungi?

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