Mcb 2610 lab - Study guides, Class notes & Summaries
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MCB 2610 Lab Practical Questions And Answers Latest Updates
- Exam (elaborations) • 4 pages • 2024
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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...
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MCB 2610 Lab Question and answers already passed 2024/2025
- Exam (elaborations) • 2 pages • 2024
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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
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MCB 2610 Lab Question and answers 100% correct 2024/2025
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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...
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MCB 2610 Lab Question and answers correctly 2024/2025
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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...
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MCB 2610 Lab Question and answers already passed 2024/2025
- Exam (elaborations) • 2 pages • 2024
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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...
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MCB 2610 Lab Question and answers verified to pass 2024/2025
- Exam (elaborations) • 2 pages • 2024
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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...
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MCB 2610 Lab Question and answers correctly solved 2024/2025
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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...
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MCB 2610 Lab Practical Exam 2024
- Exam (elaborations) • 7 pages • 2024
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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...
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MCB 2610 Lab Question and answers 2024/2025
- Exam (elaborations) • 1 pages • 2024
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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? ...
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MCB 2610 Lab Questions and answers verified to pass 2024/2025
- Exam (elaborations) • 1 pages • 2024
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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...
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