QVprep Microbiology Lessons

Bacterial Anatomy



Endospores: Endospores may be defined by the resting stage that is resistant to environmental extremes like starvation and intense heat. Endospore production is initiated when bacteria encounter harsh conditions; these structures enable survival. Bacillus and Clostridium species are known for their ability to produce endospores. Dipicolinic acid (DPA) is the primary compound that makes up the endospore.

Flagella: Flagella are bacterial appendages that are used for motility. Flagella are associated with bacterial motility or movement.

Mycolic acids: Mycolic acids perforate the cell wall of the microorganisms Mycobacterium tuberculosis. Mycolic acids are in the cell walls of Mycobacterium species.

Nucleoid region in prokaryotes: The nucleoid region in prokaryotes is the area where DNA is located in the cell. Prokaryote have DNA but no nucleus; thus, their DNA is described as being in a “nucleoid” region.