COPE Health Scholars Practice Test

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What organism causes tuberculosis?

Escherichia coli
Staphylococcus aureus
Mycobacterium tuberculosis
Influenza virus

The correct answer is: Mycobacterium tuberculosis

Mycobacterium tuberculosis is the specific organism responsible for causing tuberculosis (TB), which is an infectious disease primarily affecting the lungs but can also impact other parts of the body. This bacterium is known for its unique characteristics, such as a waxy cell wall made of mycolic acid, which contributes to its virulence and makes it resistant to many common antibiotics. Tuberculosis spreads through the air when an infected person coughs or sneezes, releasing airborne particles that can be inhaled by others. This highlights the importance of identifying the correct pathogen, as treatment and prevention strategies vary significantly between different types of organisms. In contrast, Escherichia coli is primarily known for causing gastrointestinal infections, Staphylococcus aureus is associated with skin infections and other types of systemic infections, and the Influenza virus is responsible for the flu, a viral respiratory illness. Understanding the specific organism that causes tuberculosis is crucial for appropriate diagnosis, treatment, and public health measures to control its spread.