Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
12th Edition
ISBN: 9780134605203
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 53, Problem 1CT
Design an experiment to detect the presence and number of Acetobecter in wine. Why would you want to perform such a test?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Explain the purpose of the phenol red in the medium.
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?
A
C
before washing hands
10 second hand wash
B
D
hot water only rinse
30 second hand wash
Figure 8: Agar plates with bacteria A) before washing hands B) after rinsing hands in hot water C) After washing
hands with soap for 10 seconds and D) after washing hands for 30 seconds. Images show that the number of
bacteria on the plate are not greatly reduced after a hot water rinse or 10 second handwash but bacterial levels are
reduced after a proper hand wash for 30 seconds.
What staining method would you use to verify that the isolates are not Mycobacterium species?
Describe the procedure as well. (
Chapter 53 Solutions
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
Ch. 53 - Prob. 1QCh. 53 - Will E. coli grow on Enterococcus agar, and will...Ch. 53 - Why can filtration be used to sterilize culture...Ch. 53 - Prob. 4QCh. 53 - Why is the membrane filter technique useful for a...Ch. 53 - Design an experiment to detect the presence and...Ch. 53 - A water sample could be negative for Enterococcus...
Knowledge Booster
Learn more about
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
- propose a hypothesis regarding the organisms (staphylococcus, escherichia, pseudomonas, and bacillus) that will be resistant to the most disinfectants, and why? if the hypothesis is supported, what specific experimental results will be observed? what would be the independent and dependent variable? zone size, disinfectant type, colony countarrow_forwardWhat process would explain why the dyes spread through the agar?arrow_forwardA soil sample is placed in liquid and the number of bacteria in the sample determined in two ways: (1) colony count and (2) direct microscopic count. How would the results compare?a) Methods 1 and 2 would give approximately the same results.b) Many more bacteria would be estimated by method 1.c) Many more bacteria would be estimated by method 2.d) Depending on the soil sample, sometimes method 1 would be higher and sometimes method 2 would be higher.arrow_forward
- Describe how each of the following would appear when grown on EMB agar: a. Escherichia coli b. Pseudomonas aeruginosarrow_forwardGive one example of a cereal/legume product that can be fermented by molds. Explain.arrow_forwardWhile working with Mannitol Salt Agar you notice the growth of staphylococci however other microorganisms are growing as well. How would you interpret this? Explain.arrow_forward
- Jessie is working with a 100% stock concentration of Clorox. She decides to add 100 µL of bacteria to a tube containing 3 mL of nutrient broth and then adds 400µL of the Clorox stock to the tube as well. What is the unknown concentration of the tube?arrow_forwardgive one reason why is it necessary to keep stirring the agar medium mixture in a beaker when heating in a hotplate?arrow_forwardUse the first image as an example to fill in the gaps on the second image. THANKSarrow_forward
- You are now working in the Research and Development Department of a start-up company that manufactures juices from local berries. Next in the pipeline is the production of calumpit juice, which is targeted for export to various countries. Alicyclobacillus acidoterrestris, a spoilage organism of concern in berry juices, has a D95oC = 1.0 minute in the new product. A.) If you inoculated 3.5x 104 cells to the juice, how long would it take to effect a 3-log reduction of the organism at 95oC? B.) How many cells will remain after four minutes of heating at the same temperature? C.) You found out that Geobacillus stearothermiphilus, another spore forming bacterium, can also spoil the calumpit juice. Thermal inactivation studies revealed a D95oC = 2.0 for G. stearothermophilus in the product. Which of the two spoilage bacteria is more heat resistant? Which one will you take into consideration when you compute for the F value. Defend your answer.arrow_forwardIf you streak a sample from your nose onto a Mannitol salt agar plate and the medium turns yellow, what does that tell you? (choose all that apply) a. The organism is a yeast b. The organism ferments mannitol c. The organism is beta-hemolytic d. The organism is likely Staphylococus aureus e. The organism is acid tolerantarrow_forwardYou inoculate a species of bacteria on a MacConkey agar. It normally shows positive for growth and ability to breakdown lactose. What other method would you use to confirm the result of the MacConkey agar, and what result would you expect?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Metabolic Pathways; Author: Wisc-Online;https://www.youtube.com/watch?v=m61bQYio9ys;License: Standard Youtube License