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Microbiology Lecture on Tuberculosis

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Questions and Answers

What is the size range of Mycobacterium tuberculosis?

1-2 mm long
8-10 mm long
2-5 mm long (correct)
5-7 mm long

What type of organism is Mycobacterium tuberculosis in terms of motility?

Motile
Non-motile (correct)
Flagellated
Spore-forming

What characteristic makes Mycobacterium tuberculosis resistant to disinfectants?

Size range
Presence of flagella
Being spore-forming
Non-spore forming (correct)

Which country experienced a significant decline in TB cases in developed countries due to case finding, treatment, and improved nutrition?

United Kingdom (B) Signup and view all the answers

In what state does tuberculous infection occur without symptoms?

Latent phase (C) Signup and view all the answers

What is the primary reservoir of Mycobacterium tuberculosis according to the text?

Human (B) Signup and view all the answers

What is the primary mode of transmission of Tuberculosis?

Inhalation of droplet nuclei (A) Signup and view all the answers

Which demographic group has the highest risk of developing Tuberculosis in the United States?

Asian-Americans (A) Signup and view all the answers

What is a common risk factor for developing Tuberculosis?

Long-term alcohol use (C) Signup and view all the answers

How does Mycobacterium tuberculosis enter the body?

Inhalation of infected air (A) Signup and view all the answers

What is the primary organ affected by Tuberculosis once the bacteria enter the body?

Lungs (A) Signup and view all the answers

How are droplet nuclei involved in the transmission of Tuberculosis?

Inhaled and reach alveoli to cause infection (D) Signup and view all the answers