One of the foremen at a pig farm notices purple sores on one of his workers. The worker has not been feeling well for the past t
wo weeks, so the foreman sends him to the doctor. The doctor takes scrapings from the sores and sends them to the laboratory for a culture and susceptibility. The Gram stain shows 3 thin, gram-positive rods that are short but also have filaments. The culture plates were examined the next day and revealed alpha hemolytic, pinpoint, transparent colonies. The catalase reaction was negative. The TSI H2S was positive. What is the most likely pathogen?
Erysipelothrix rhusiopathiae is a Gram-positive, catalase-negative, rod-shaped, non-spore-forming, nonacid-fast, nonmotile bacterium. Distributed worldwide, E. rhusiopathiae is primarily considered an animal pathogen, causing the disease known as erysipelas that may affect a wide range of animals.
In cellular respiration, electrons from glucose move gradually through the electron transport chain towards oxygen, passing to lower and lower energy states and releasing energy at each step.
A scientific theory is a theory that explains the scientist's observations, whereas a scientific law is a repeated pattern in the world that we have not sought an explanation for.
