Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 29.1, Problem 4CC
Summary Introduction
The isolation of microbes is important to obtain a single microbe in the population. As the microbes are almost present everywhere, it means that the environment contains more different species of microbes is available. The isolation is important to separate the desired microbe from the rest of the mixed population.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
1)What is the natural color of cytoplasm? How is it related to our need to stain bacterial cells?
2) Which of the following is the main goal when staining a culture?
A) improve contrast
B) identify bacteria
C) Visualize bacterial structures
What general type of growth medium would you use to:
(a) grow one type of bacteria but inhibit the growth of another type?
(b) discriminate between different types of bacteria?
A 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.
Chapter 29 Solutions
Prescott's Microbiology
Ch. 29.1 - What happens to the flow stream in fluorescence...Ch. 29.1 - Prob. 1CCCh. 29.1 - Prob. 2CCCh. 29.1 - Describe the rationale upon which the extinction...Ch. 29.1 - Prob. 4CCCh. 29.2 - Prob. 1MICh. 29.2 - Prob. 1CCCh. 29.2 - Prob. 2CCCh. 29.2 - Prob. 3CCCh. 29.2 - Prob. 4CC
Ch. 29.3 - How do radioactive and stable isotopes differ?...Ch. 29.3 - Prob. 2CCCh. 29.3 - Prob. 3CCCh. 29.3 - Prob. 4CCCh. 29.3 - What is the difference between MAR and MAR-FISH?...Ch. 29 - Prob. 1RCCh. 29 - Prob. 2RCCh. 29 - Prob. 3RCCh. 29 - Prob. 4RCCh. 29 - Prob. 5RCCh. 29 - Prob. 6RCCh. 29 - Prob. 7RCCh. 29 - Prob. 8RCCh. 29 - Prob. 9RCCh. 29 - Prob. 10RCCh. 29 - Prob. 11RCCh. 29 - How might you attempt to grow in the laboratory a...Ch. 29 - Both acetate and CO2 can be used by methanogenic...Ch. 29 - Prob. 3AL
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
- Biofilms represent an important environmental niche. A) How does growth on a surface differ from growth in a suspended laboratory culture? (In other words: How do biofilm-forming cultures differ from planktonic cultures) B) Describe the stages of biofilm development including cellular and extracellular components?arrow_forwardBiofilms represent an important environmental niche. A) How does growth on a surface differ from growth in a suspended laboratory culture? (In other words: How do biofilm-forming cultures differ from planktonic cultures) B) Describe the stages of biofilm development including cellular and extracellular components? C) What processes regulate might regulate biofilm formation? Is quorum sensing involved and if so, how common is it? D) Why would biofilms promote the formation of genetic variants? What are the mechanisms by which this might occur? These questions are all related.arrow_forward). Consider a culture medium on which only gram-positive organisms such as Staphylococcus aureus colonies can grow due to an elevated NaCl level. A yellow halo surrounds the growth, indicating the bacterium fermented sugar in the medium, decreasing the pH as a result and changing the color of a pH indicator chemical. This type of medium would be referred to as a(n): A) Selective medium. B) Differential medium. C) Enrichment culture. D) Selective and differential medium. E) Differential and enrichment culture.arrow_forward
- You accidentally switch the Crystal violet and Safranin steps during your Gram stain. When you look under the microscope, what color will a Gram positive bacteria, like Staphylococcus aureus, be? a)red/pink b)purple c)colorlessarrow_forwardWhat is a chemostat? a) a chemical used as a substrate for growth of microbial cells b) a batch culture that uses a defined medium for growth c) a system used for the continuous culture of microbial cells d) a nutrient that is able to control the growth rate of a bacterial culturearrow_forwardWhy is bacterial culture useful to grow bacteria?arrow_forward
- A culture medium on which only Gram-positive organisms grow is called a(n): Question 9 options: A) acid-fast medium B) differential medium C) enrichment culture D) selective mediumarrow_forwardAfter inoculating and incubating an agar slant from a pure broth culture of a bacterial species such as E. coli, which of the following would indicate an unsuccessful aseptic transfer? (Choose ALL that apply) a - There is fungal growth in the original broth culture tube. b- There is too much growth on the agar slant. c- There are colonies of similar morphology on the slant. d - There are red, yellow, and white colonies on the slant. e - There is no growth on the slant.arrow_forwardWhich of the following methods used to enumerate cells often requires specialized staining to observe nonpigmented bacteria? A) Spectrophotometry/turbidity B) Spread-plating C) Microscopy D) Spread-plating, turbidity, and microscopyarrow_forward
- Why do you suppose endospore-forming bacteria are commonly found in the soil? Suppose your unknown bacteria is a Gram-negative rod. You decide to perform an endospore stain, thinking it will help you with the identification of the organism. What will you see, and why?arrow_forward1) Listen In the lab you are testing a bacterium's oxygen requirement for growth. You grow your bacterium in a test tube, without shaking at the appropriate temperature. The next day you find that your bacterial culture is growing only at the top surface (ie at the top of the tube closest to the cap) and not dispersed throughout the test tube. What term would be used to describe the oxygen requirement of this bacterium? O A) Obligate aerobe. O B) Microaerophile. O C) Anaerobe. D) Obligate anaerobe. E) Facultative anaerobe.arrow_forwardIn microbiology, the term growth in a culture usually refers to an increase in O 1) the number and size of microbial cells. O 2) the amount of ATP consumed. O 3) a microbe's size. O 4) the number of microbial cells. 5) the amount of ATP produced.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Microbial Nutrition and Growth; Author: Scientist Cindy;https://www.youtube.com/watch?v=rK3UkyWjkl8;License: Standard YouTube License, CC-BY