Answer:
Mycobacterium tuberculosis, appearing as long, thin rods, is classified as bacilli, and it stains red with techniques like Ziehl-Neelsen stain. Option (d) is true.
Step-by-step explanation:
Mycobacterium tuberculosis is a bacterium known for its distinctive appearance under certain staining techniques.
When stained, it takes up a red color and is characterized by its long, thin rod-like shape. In microbiology, bacteria with a rod-shaped morphology are generally referred to as "bacilli."
The staining process, often using techniques like Ziehl-Neelsen stain, helps highlight the presence of these acid-fast bacilli, making them more easily identifiable under a microscope.
This staining property is a key feature in the laboratory identification of Mycobacterium tuberculosis, the causative agent of tuberculosis.
This characteristic staining pattern is often observed in laboratory settings, particularly when using certain staining techniques like Ziehl-Neelsen stain, which is commonly used to detect acid-fast bacteria like Mycobacterium tuberculosis.
Thus, option (d) is true.