Final answer:
Mycobacterium tuberculosis is an obligate aerobe that causes tuberculosis (TB). It typically infects the lungs and can spread to other organs through the bloodstream.
Step-by-step explanation:
Mycobacterium tuberculosis is a bacterium that causes tuberculosis (TB). It is an obligate aerobe, meaning it requires oxygen to grow and survive. While TB can infect various parts of the body, it is typically associated with the lungs. The bacteria enter the alveoli in the lungs after inhalation and can grow and multiply in the walled-off lesions called tubercles. If the tubercles rupture, the bacteria can spread through the bloodstream to other organs, causing miliary tuberculosis.