Mcb 2610 lab - Study guides, Class notes & Summaries

What is the magnification value of the ONLY objective lens that should come in contact with immersion oil? - ️️100x What are the 4 phases of microbial growth? - ️️lag phase log phase stationary phase death phase in what orientation do you incubate the plates after they have been streaked? - ️️agar half on top what must you do to the loop before every use? - ️️flame sterilize your loop T/F: The last thing you do before leaving the lab is take off your lab coat - ️️Fal...

MCB 2610 Lab Question and answers already passed 2024/2025 MCB 2610 Lab: Week 4 What causes bacterial endospore formation? - correct answer nutrient depletion What are the 4 phases of microbial growth? - correct answer (1) lag (2) log (3) stationary (4) death T/F: We will measure the optical density over time to determine growth rate - correct answer true Define generation time - correct answer time required for microbial cells to double in number

MCB 2610 Lab Question and answers 100% correct 2024/2025 MCB 2610 Lab: Week 3 T/F: When making a smear of the culture, you heat fix the slide before drying it completely - correct answer false T/F: Wiping down the bench with Wescodyne is the last thing you do when leaving the lab - correct answer false What is the magnification of the ONLY objective lens that should come in contact with immersion oil? - correct answer 100x Pertaining to the Gram Stain, cells that retain crysta...

MCB 2610 Lab Question and answers correctly 2024/2025 MCB 2610 Lab: Week 9 In a LT broth tube, in order to detect the fermentation of lactose, a _______ is used to capture gas production - correct answer Durham tube LT broth is a (confirmatory/presumptive) test, used to detect the possible presence of coliforms within a water source - correct answer presumptive What indicates a coliform on the EMB plate? - correct answer growth on the plate What type of hemolysis shows a gree...

MCB 2610 Lab Question and answers already passed 2024/2025 MCB 2610 Lab: Week 5 What group of organisms does MacConkey agar select against? - correct answer Gram (+) T/F: complex media is made with a precise chemical composition - correct answer false What organism does SF broth select for? - correct answer E. faecalis What type of bacteria can be differentiated using an EnteroPluri tube? - correct answer enteric bacteria What is the name of the enzyme that hydrolyzes mil...

MCB 2610 Lab Question and answers verified to pass 2024/2025 MCB 2610 Lab: Week 11 An antibiotic that is effective against a wide variety of pathogenic microorganisms is called a(n) _______________ antibiotic - correct answer broad spectrum TF: Bacteriostatic antiseptics kill bacteria - correct answer false Upon addition of Zinc to nitrate broth tubes, a red color indicated the presence of _________ - correct answer nitrate Wescodyne is an example of a(n) _____________ (anti...

MCB 2610 Lab Question and answers correctly solved 2024/2025 MCB 2610 Lab: Week 10 If a nitrate broth tube does not change color after adding Nitrate Reagents A&B AND zinc, did nitrate reduction occur? - correct answer yes Name one of the five major groups of organisms that can/must grow in the absence of free oxygen - correct answer fermentative, facultative anaerobes T/F: fermentative organisms can also perform respiration - correct answer false Name one of the five major...

What is the process of contamination control? - Aseptic technique What are pipettes - calibrated glass tubes used to measure and dispense small volumes of liquids What color is the bigger vs. smaller micropipettors pipettes? - Green - bigger Blue - smaller What is the purpose of isolating bacteria? - To establish a PURE CULTURE, to be able to study to study the physiology and morphology of a particular bacterial type What is the quickest and most economical method of bacterial isola...

MCB 2610 Lab Question and answers 2024/2025 MCB 2610 Lab: Week 2 The ______ method is a quick and easy way to isolate bacteria - correct answer streak plate How many times do you get culture from the tube while performing a T-streak? - correct answer once Who do you contact to reschedule a lab? - correct answer lab supervisor (Gino Intrieri) T/F: The culture tubes are disposed of in the gray trash bins - correct answer true What is the first thing you do after a spill? ...

MCB 2610 Lab Questions and answers verified to pass 2024/2025 MCB 2610 Lab: Week 6 MacConkey's agar selects for _______ bacteria - correct answer gram negative The Durham tube is used to test for _______ - correct answer gas production (fermentation) T/F: SF media is purple if fermentation is occurring - correct answer false T/F: true motility includes random collisions with water molecules - correct answer false What is the highest objective magnification used with d...