Anyone in for role playing?- qwq- bio down below, have nothing nice to say, don't say anything and just ignore this -n- Age: 15~Gender: Female~sexuality: Bisexual~
About me: I'm kinda childish for my age, i have adhd, i'm adorable u3u, and if you have questions, ask! ^^

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.