TCU Microbiology Lab Exam 1 | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+

chemically defined (synthetic) media Correct Answer: media composed of precisely defined chemicals elements that all bacteria need Correct Answer: carbon, nitrogen, phosphorus, sulfur, oxygen, and hydrogen minimal media Correct Answer: media that contains exact nutrients needed for growth and nothing extra - media is useful b/c we know exactly what's in it, but few organisms are resourceful enough to survive with only a few salts and sugars complex media Correct Answer: - it contains all the nutrients necessary for the microbes - aka general purpose media, satisfies the nutritional requirements of bacteria with more stringent growth requirements - consists of mix of digests & extracts from plant or animal tissue - nutrient rich but poorly defined with the exact nutrients unknown 2 - in lab we use complex media: tryptic soy media enriched media Correct Answer: complex media that contains additional "special" nutrients/additives that are not commonly found in media - least commonly used media autoclave Correct Answer: media is subjected to high-pressure steam at 121C at 15 lbs. of pressure to sterilize and destroy any contaminants present two major forms of media Correct Answer: liquid and solid media - media solidifies by adding agar (1.5%) - agar is inert and incapable of growing by itself what temperature do most bacterial organisms grow at? Correct Answer: 37C (98.6F) colony Correct Answer: A population of cells arising from a bacterial cell group or from a group of attached bacterial cell