question Which microorganism is involved in the nitrogen cycle

What is the primary role of antibiotics in microbiology?

A. Inhibiting or killing bacteria
B. Enhancing viral replication
C. Promoting fungal growth
D. Facilitating protozoan infections

What is the primary role of Mycobacterium tuberculosis?

A. Causes tuberculosis in humans
B. Fermentation of dairy products
C. Decomposes dead plant material
D. Produces penicillin

What is the function of the flagellum in bacteria?

A. Locomotion
B. Nutrient absorption
C. DNA replication
D. Antibiotic production

Which of the following is a viral vector used in genetic engineering?

A. Adenovirus
B. Streptococcus pyogenes
C. Escherichia coli (E. coli)
D. Saccharomyces cerevisiae (brewer's yeast)

Which microorganism is responsible for the production of penicillin?

A. Penicillium
B. Streptococcus mutans
C. Escherichia coli (E. coli)
D. Mycobacterium tuberculosis

What is the primary function of the lytic cycle in viral replication?

A. Destruction of the host cell to release new virions
B. Integration of viral DNA into the host genome
C. Formation of viral capsids
D. Production of viral enzymes

Which microorganism is responsible for causing dental caries?

A. Streptococcus mutans
B. Escherichia coli (E. coli)
C. Candida albicans
D. Mycobacterium tuberculosis

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

Which of the following is a sexually transmitted infection caused by a bacterium?

A. Syphilis
B. HIV/AIDS
C. Hepatitis B
D. Malaria

Which microorganism is responsible for the production of citric acid?

A. Aspergillus niger
B. Streptococcus pyogenes
C. Mycobacterium leprae
D. Candida albicans

Microbiology MCQS - QUESTION DETAILS

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