Final answer:
The word root 'Py' is associated with pus. This is observed in medical terms like 'pyoderma' and 'S. pyogenes', which are linked with pus production.
Step-by-step explanation:
The word root "Py" relates to pus. This is evident from various biological terms such as pyoderma, which signifies a pus-producing infection of the skin, and pyuria, which indicates the presence of pus or white blood cells in the urine. Another example is Streptococcus pyogenes, classified as a pathogen that is known for causing infections characterized by the production of pus.
Streptococcus pyogenes is a major human-specific bacterial pathogen that causes a wide array of manifestations ranging from mild localized infections to life-threatening invasive infections.[1] Ineffective treatment of S. pyogenes infections can result in the postinfectious sequela acute rheumatic fever and post-streptococcal glomerulonephritis. Moreover, it causes invasive infections like necrotizing fasciitis and toxic shock syndrome that is associated with and high morbidity and mortality.
Streptococci are gram-positive, catalase-negative, coagulase-negative cocci that occur in pairs or chains. They are divided into three groups by the type of hemolysis on blood agar: beta-hemolytic (complete lysis of red cells), a hemolytic (green hemolysis), and gamma-hemolytic (no hemolysis). Beta-hemolytic streptococci are characterized as group A streptococci (Streptococcus pyogenes) and group B streptococci (Streptococcus agalactiae).