"Microbiology"

Both of these strains of Serratia marcescens are colorless mutants when plated alone, but when grown together, they produce a red pigment.

Kocuria rhizophila is also commonly known by the name Micrococcus luteus. This organism is commonly isolated from soil, and is frequently used to test antimicrobial efficacy in the food industry.

This organism is a common inhabitant of intestinal flora, and can be a major cause of urinary tract infection.

This yellow, shiny organism is known to cause wound infections and more famously, toxic shock syndrome.

This species of Rhodospirillum is commonly isolated from stagnant water and mud. It is especially interesting because it produces a red pigment and is also capable of photosynthesis.

This organism is commonly isolated from soil, and depending upon the temperature of its environment, can produce a distinctive red pigment.

This organism is occasionally isolated from soil, but most frequently from smegma- a secretion from male and female genitalia.

Normal flora of respiratory tract. Beta-lactamase positive. Also known by the name Branhamella catarrhalis

This organism can be isolated from many human urinary tract infections, as well as polluted water and sewage. It is commonly identified by its distinctive grape-like smell (trimethylamine) or because it can turn the agar light green due to production of a blue pigment (pyocyanin).

A fun and safe way to bring STEM-based learning into the classroom.