BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 27, Problem 3TY
- a. determine if a bacterial strain is a pathogen.
- b. determine if a sample of bacteria sample can break down oil.
- c. infer the structure of the cell wall of bacteria and their response to antibiotics.
- d. count bacteria in medical or environmental samples.
- e. do all of the above.
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Attached below is the study about the effects of handwashing and the effectiveness of soap against bacteria. What conclusions can be generated from this result? (see rubrics
for the point marking)
A before washing hands
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Figure 8: Agar plates with bacteria A) before washing hands B) after rinsing hands in hot water C) After washing
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You make a smear of E. coli and then simple stain the slide with methylene blue. If you failed to use correct aseptic technique by not sterilizing the loop before picking up the bacterial sample for the smear, what results may be seen under the microscope?
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No cells may be visible on the slide.
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What is the purpose of diluting a culture by making "quadrant streaks" (or "streak plating") bacteria, and what can we use them for? Check all that apply
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To observe colony morphology/color
B.
To isolate viral plaques
C.
testing growth conditions or treatments (such as media, antibiotics, incubation temperature etc.,)
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To isolate a clonal population of bacteria from the rest of the culture
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For subculturing (transferring to new media so we can grow more bacteria, storing the plate in a fridge for repeated use so the bacteria don't die quickly)
F.
Accurate quantification (to calculate CFU/mL)
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To know what strain of bacteria you're working with, since you can tell based on how it looks on the plate.
H.
To lower risk of contamination/identify contamination
Chapter 27 Solutions
BIOLOGY
Ch. 27.2 - Core Skill: Connections Look ahead to Section...Ch. 27.2 - Prob. 2CSCh. 27.2 - Structure and Movement Concept Check: Does the...Ch. 27.2 - Prob. 3CSCh. 27.3 - Prob. 1CCCh. 27.5 - Prob. 1EQCh. 27.5 - Prob. 2EQCh. 27 - Which of the following features is common to...Ch. 27 - The bacterial phylum whose members typically...Ch. 27 - Gram-staining is a procedure that microbiologists...
Ch. 27 - Place the following steps in the correct order,...Ch. 27 - What ecological role do cyanobacteria play? a....Ch. 27 - Prob. 6TYCh. 27 - Prob. 7TYCh. 27 - Prob. 8TYCh. 27 - Prob. 9TYCh. 27 - Prob. 10TYCh. 27 - Prob. 1CQCh. 27 - Prob. 2CQCh. 27 - Prob. 3CQCh. 27 - Prob. 1COQCh. 27 - Prob. 2COQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
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