question What is the primary function of the polymerase chain reaction PCR in microbiology

What is the primary function of microorganisms in the nitrogen cycle?

A. Conversion of nitrogen between different forms
B. Photosynthesis
C. Cellular respiration
D. Synthesis of amino acids

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 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)

What is the primary function of the cytoplasmic membrane in bacterial cells?

A. Selective permeability
B. Nutrient absorption
C. Protection from desiccation
D. Synthesis of cellular ATP

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

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

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 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 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 involved in the nitrogen cycle?

A. Nitrosomonas
B. Saccharomyces cerevisiae (brewer's yeast)
C. Staphylococcus aureus
D. Plasmodium falciparum (malaria parasite)

Microbiology MCQS - QUESTION DETAILS

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