Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Chapter 6, Problem 2MCQ
Two culture media were inoculated with four different bacteria. After incubation, the following results were obtained:
| Organism | Medium 1 | Medium 2 |
| Escherichia coli | Red colonies | No growth |
| Staphylococcus aureus | No growth | Growth |
| Staphylococcus epidermidis | No growth | Growth |
| Salmonella enterica | Colorless colonies | No growth |
2. Medium 2 is
- a. selective.
- b. differential.
- c. both selective and differential.
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Blood agar contains intact sheep red blood cells which are used to determine if a microbe has the ability to lyse these cells. This agar is properly termed
A. a selective differential medium
B. a complex medium
C. a differential medium and a complex medium
D. a selective medium
Which isolation technique is best used in isolating microorganisms (in countable good plates) from a gram of soil sample with expectedly high microbial count?
A. Streak Plate technique
B. Serial Dilution-Pour Plate technique
C. Spread Plate technique
D. Hanging Drop technique
2. Which materials are needed in isolating bacteria using Streak Plate technique? Check all that apply.
( )nutrient agar plate
( ) inoculating loop
( ) microbial inoculum
( ) flame source
3. Which term refers to that solution of sterile distilled water/normal saline/peptone water used to "thin out" dense microbial populations in Serial Dilution-Pour Plate technique used in the isolation of microorganisms?
A. inoculum
B. culture medium
C. diluent
D. microbial culture
Chapter 6 Solutions
Microbiology: An Introduction (13th Edition)
Ch. 6 - Prob. 1RCh. 6 - Prob. 2RCh. 6 - Prob. 3RCh. 6 - Seven methods of measuring microbial growth were...Ch. 6 - By deep-freezing, bacteria can be stored without...Ch. 6 - A pastry chef accidentally inoculated a cream pie...Ch. 6 - Nitrogen and phosphorus added to beaches following...Ch. 6 - Differentiate complex and chemically defined...Ch. 6 - DRAW IT Draw the following growth curves for E....Ch. 6 - NAME IT A prokaryotic cell hitched a ride to Earth...
Ch. 6 - Two culture media were inoculated with four...Ch. 6 - Two culture media were inoculated with four...Ch. 6 - Use the following graph to answer questions 3 and...Ch. 6 - Use the following graph to answer questions 3 and...Ch. 6 - Assume you inoculated 100 facultatively anaerobic...Ch. 6 - The term trace elements refers to a. the elements...Ch. 6 - Which one of the following temperatures would most...Ch. 6 - Which of the following is not a characteristic of...Ch. 6 - Which of the following types of media would not be...Ch. 6 - An organism that has peroxidase and superoxide...Ch. 6 - E. coli was incubated with aeration in a nutrient...Ch. 6 - Clostridium and Streptococcus are both...Ch. 6 - Most laboratory media contain a fermentable...Ch. 6 - Flask A contains yeast cells in glucose-minimal...Ch. 6 - Clinical Applications and Evaluation 1. Assume...Ch. 6 - Heat lamps are commonly used to maintain foods at...Ch. 6 - The number of bacteria in saliva samples was...
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