Which of the Following Is Not a Virulence Factor Associated

question 3

Multiple Choice

Which of the following is not a virulence factor associated with strep throat caused by Streptococcus pyogenes?

• A)Hemolysin O
• B)Streptokinase
• C)Tracheal toxin
• D)Hemolysin S
• E)M protein

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Definitions:

DDT

Dichloro-Diphenyl-Trichloroethane, a synthetic insecticide used historically for malaria and pest control, now banned in many countries due to environmental impact.

Nitrogen Cycle

A biogeochemical cycle that describes the transformations of nitrogen and nitrogen-containing compounds in nature.

Nitrogen Fixation

The process by which nitrogen gas from the atmosphere is converted into ammonia by certain bacteria, making nitrogen available to living organisms.

Denitrification

A microbial process occurring mostly in soil and aquatic environments, where nitrate is reduced and ultimately produces molecular nitrogen, removing it from the ecosystem.