Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 43, Problem 3CHI
Biofilms are known to form on surfaces in drinking water distribution networks. It is therefore important to understand how such biofilms develop and how long they last. A recent study followed the development of biofilms populated by the protists in the genera Giardia and Cryptosporidium, as well as a strain of Poliovirus and several bacteriophages. Attachment to, growth within, and detachment from model biofilms were measured in tap water flowing through a special reactor designed to simulate the type of turbulence found in a water distribution network.
Why were the investigators especially interested in biofilm stability? Also, why were they interested in bacteriophages? What special considerations do you think need to be addressed when studying protists with relatively complex life cycles? What method do you think would be most appropriate to detect the protists? What about detecting the viruses?
Read the original paper: Helmi, K., et al. 2008. Interactions of Cryptosporidium parvum, Giardia lamblia, vaccinal poliovirus type 1, and bacteriophages fX174 and MS2 with a drinking water biofilm and a wastewater biofilm. Ann. Rev. Microbiol. 74:2079.
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Students have asked these similar questions
Stage
Percent
Time in Hours
Interphase
.60
14.4
Prophase
.20
4.8
Metaphase
.10
2.4
Anaphase
.06
1.44
Telophase
.03
.72
Cytukinesis
.01
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Can you summarize the results in the chart and explain which phases are faster and why the slower ones are slow?
Can you circle a cell in the different stages of mitosis?
1.prophase
2.metaphase
3.anaphase
4.telophase
5.cytokinesis
Which microbe does not live part of its lifecycle outside humans?
A. Toxoplasma gondii
B. Cytomegalovirus
C. Francisella tularensis
D. Plasmodium falciparum
explain your answer thoroughly.
Chapter 43 Solutions
Prescott's Microbiology
Ch. 43.1 - MICRO INQUIRY What is the difference between...Ch. 43.1 - Prob. 1RIACh. 43.1 - Prob. 2RIACh. 43.1 - Prob. 3RIACh. 43.1 - Prob. 4RIACh. 43.1 - Why do you think workers who perform these tests...Ch. 43.2 - Prob. 1MICh. 43.2 - Prob. 2MICh. 43.2 - Prob. 3MICh. 43.2 - Explain how primary, secondary, and tertiary...
Ch. 43.2 - Prob. 1.2RIACh. 43.2 - Prob. 1.3RIACh. 43.2 - Prob. 1.4RIACh. 43.2 - Prob. 1.5RIACh. 43.2 - What minerals contribute to eutrophication?Ch. 43.2 - Prob. 2.1RIACh. 43.2 - Prob. 2.2RIACh. 43.2 - Prob. 2.3RIACh. 43.3 - Why must the membrane between the two chambers be...Ch. 43.3 - Prob. 1RIACh. 43.3 - Prob. 2RIACh. 43.3 - How might microbial fuel cells be involved in...Ch. 43.4 - Why does dehalogenation increase the likelihood...Ch. 43.4 - Prob. 1RIACh. 43.4 - Explain the two mechanisms of reductive...Ch. 43.4 - Prob. 3RIACh. 43.4 - What components are commonly added to microbes...Ch. 43.4 - Prob. 5RIACh. 43 - You wish to build a house in a rural community...Ch. 43 - Prob. 2CHICh. 43 - Biofilms are known to form on surfaces in drinking...
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