Pearson eText Microbiology: An Introduction -- Instant Access (Pearson+)
13th Edition
ISBN: 9780135789377
Author: Gerard Tortora, Berdell Funke
Publisher: PEARSON+
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 27, Problem 2CAE
The bioremediation process shown in the photograph is used to remove benzene and other hydrocarbons from soil contaminated by petroleum. The pipes are used to add nitrates, phosphates, oxygen, or water. Why are each of these added? Why is it not always necessary to add bacteria?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
You're in charge of bioremediation of jet fuel-contaminated soil. Your colleague advises that you add nitrogen and phosphate to the soil to encourage the development of naturally existing hydrocarbon-degrading bacteria. However, you've just read about a new microbe slurry containing nutrients and a surfactant that's being marketed. What information do you need to gather in order to choose the best course of action? How are you going to get these numbers?
). 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.
An attempt to transfer bacteria into new media during the death (Decline) phase of a culture resulted in actual growth of the organisms. What is the most likely explanation of this phenomenon?
Chapter 27 Solutions
Pearson eText Microbiology: An Introduction -- Instant Access (Pearson+)
Ch. 27 - The koala is a leaf-eating animal. What can you...Ch. 27 - Give one possible explanation of why Penicillium...Ch. 27 - In the sulfur cycle, microbes degrade organic...Ch. 27 - Why is the phosphorus cycle important?Ch. 27 - DRAW IT 5. Identify where the following processes...Ch. 27 - Prob. 6RCh. 27 - Outline the treatment process for drinking water.Ch. 27 - Prob. 8RCh. 27 - Bioremediation refers to the use of living...Ch. 27 - NAME IT 10. These nitrogen-fixing prokaryotes...
Ch. 27 - Activated sludge system a. the process takes place...Ch. 27 - Prob. 2MCQCh. 27 - Nitrogen fixation a. the process takes place under...Ch. 27 - Prob. 4MCQCh. 27 - The water used to prepare intravenous solutions in...Ch. 27 - CO2+H2SLightLightC6H12O6+S0 a. aerobic respiration...Ch. 27 - Prob. 7MCQCh. 27 - CO2+8H++8eCH4+2H2O a. aerobic respiration b....Ch. 27 - Prob. 9MCQCh. 27 - Coliforms are used as indicator organisms of...Ch. 27 - Prob. 1ACh. 27 - Explain the effect of dumping untreated sewage...Ch. 27 - Flooding after two weeks of heavy rainfall in...Ch. 27 - The bioremediation process shown in the photograph...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Explain how biosensors might be used for water quality testing. Would biosensors give more accurate identificat...
Microbiology with Diseases by Taxonomy (5th Edition)
Distinguish between microevolution, speciation, and macroevolution.
Campbell Essential Biology (6th Edition) - standalone book
Using the forked-line, or branch diagram, method, determine the genotypic and phenotypic ratios of these trihyb...
Concepts of Genetics (11th Edition)
Why is it unlikely that two neighboring water molecules would be arranged like this?
Campbell Biology (10th Edition)
The principal form of nitrogen on Earth is N2, which can be used as a N source only by nitrogen-fixing bacteria...
Brock Biology of Microorganisms (15th Edition)
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
- The thermal death point refers to: O 1) The time it takes to kill an organism in an autoclave 2) The temperature it requires to kill an organism within 10 minutes 3) The time it takes to kill an organism at a chosen temperature O 4) The temperature required to kill prions O 5) The time required to disinfect a surfacearrow_forwardjust do d and earrow_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
- You found a bright blue growth on a tomato you had left on your kitchen counter. You’ve never seen a microorganism that color, and you want to know what it is. You take the tomato into the lab, sterilize an inoculating loop, transfer a sample from the tomato to a Nutrient Agar Petri dish, and incubate it at 37°C. But when you come back two days later, your Petri dish is empty. Why might this be? Be specific about what might have happened. How would you test your hypothesis?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 an experiment, the bacteria were placed in dropper bottles containing glycerol as a carbonsource. Why did the culture have to be incubated for an hour in the new media?arrow_forward
- Which of the two carbon sources, glucose or acetate, is more advantageous for the cultivation of E.coli bacteria? Why?arrow_forwardDuring the fall 2001 bioterrorist attack in which anthrax endospores were sent through the mail, one news commentator suggested that people should iron all their incoming mail with a regular household iron as a means of destroying endospores. Would you agree that this is a good way to disinfect mail? Explain your answer. Which disinfectant methods would be both more effective and more practical?arrow_forwardIs this the correct answer? (7arrow_forward
- Why are petri dishes ALWAYS stored and incubated upside down? Question 17 options: a) helps bacteria grow b) the lid is larger and make the dish more stable c) prevents condensation from dripping on to agar surface d) so the label can be seenarrow_forwardA microbiologist used the concept of enrichment culture to isolate aerobic and anaerobic nitrogen-fixing bacteria, sulfate-reducing bacteria, and sulfur-oxidizing bacteria. What kind of selective media could he haveused for isolating each of these four classes of microbes?arrow_forwardSince there are still bacteria left in pasteurized milk, why is it not routinely sterilized instead so that everything is killed?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Bacterial Structure and Functions; Author: Osmosis;https://www.youtube.com/watch?v=b15Hy3jCPDs;License: Standard youtube license