question What is the primary role of microorganisms in the oxygen cycle

Microbiology

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

A. Oxygen production through photosynthesis
B. Nitrogen fixation
C. Denitrification
D. Cellular respiration

Microorganisms contribute to the oxygen cycle through processes like photosynthesis.

Which microorganism is responsible for the production of citric acid in the tricarboxylic acid (TCA) cycle?

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

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

A. Recycling of phosphorus in ecosystems
B. Nitrogen fixation
C. Photosynthesis
D. Cellular respiration

Which process involves the conversion of atmospheric nitrogen into ammonia?

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

What is the primary mode of nutrition in fungi?

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

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

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

Which of the following diseases is caused by a protozoan?

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

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 used in the production of antibiotics?

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

Which microorganism is used in the production of yogurt?

A. Lactobacillus
B. Salmonella
C. Pseudomonas aeruginosa
D. Clostridium botulinum

What is the primary function of the microbiome in the human body?

A. Maintaining a balance of beneficial microorganisms
B. Aiding in locomotion
C. Producing hormones
D. Facilitating blood circulation