Microbiology Fundamentals: A Clinical Approach
3rd Edition
ISBN: 9781259709227
Author: Marjorie Kelly Cowan Professor, Heidi Smith
Publisher: McGraw-Hill Education
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Chapter 22, Problem 9Q
Summary Introduction
To determine:
Whether it would be a good idea to dose cows with probiotics containing methane-consuming bacteria.
Introduction:
Probiotics are the mixture of microorganisms that are able to protect or prevent humans from certain diseases. Probiotics are known as either good or helpful bacteria because they help in keeping the human gut healthy. These probiotics are prepared by the bacterial fermentation. Probiotics can be taken in the form of food as supplements.
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(c)
Public health scientists wanted to investigate the effect of ionising radiation on the
growth of Salmonella typhimurium in the presence of antibiotics.
They grew bacterial colonies of Salmonella typhimurium in petri dishes labelled A, B
and C.
The Petri dishes were kept at 36°C for 48 hours, with scientists observing the bacteria
every 24 hours.
The results for this investigation are below.
Petri
dish
A
B
с
Treatment
Was subjected to
ionising radiation
followed immediately
by a dose of antibiotic
X
An equal amount of
antibiotic X was added
(as was added to Petri
dish A)
Was given neither
ionising radiation nor
antibiotic X
After 24 hours
Small spots of growth
on surface
No growth
Growth across whole
surface
After 48 hours
(ii) Identify the purpose of petri dish C.
Large spots of growth
on surface
No growth
Growth across whole
surface
(i) Explain the effect of the ionising radiation on the bacteria.
(iii) Explain why scientists must continue to develop new antibiotics.
What is the difference between the use of Peppermint oil and Cinnamon oil in Veterinary Medicine to treat the bacterial infections Escherichia coli and Staphylococcus?
Out of the 5 possible oxygen requirements (Obligate aerobes, microaerophiles, etc), what specifically is E. coli, Pseudomonas aeruginosa, and Clostridium sporogenes?
Chapter 22 Solutions
Microbiology Fundamentals: A Clinical Approach
Ch. 22.1 - Draw your own representation or logo depicting how...Ch. 22.2 - Provide a definition for zoonosis.Ch. 22.2 - Discuss the effects of deforestation and...Ch. 22.3 - Differentiate between coliforms and E. coli.Ch. 22.3 - Prob. 5AYPCh. 22.3 - Prob. 1MMCh. 22.3 - Q. What further precautions can vulnerable people...Ch. 22.4 - Define biological oxygen demand.Ch. 22.4 - Prob. 7AYPCh. 22.4 - Prob. 8AYP
Ch. 22 - Prob. 1QCh. 22 - In Malaysia, a form of malaria that was previously...Ch. 22 - Prob. 3QCh. 22 - Prob. 4QCh. 22 - Why do you think microbes are so adept at breaking...Ch. 22 - Prob. 6QCh. 22 - Contaminated water has a. lower biological oxygen...Ch. 22 - Why do microbes exist that are capable of cleaning...Ch. 22 - Prob. 9QCh. 22 - Prob. 10QCh. 22 - Prob. 11QCh. 22 - With what you have learned about increasingly...Ch. 22 - Prob. 13QCh. 22 - Explain how a warming climate is likely to impact...Ch. 22 - Conduct research to find out where the...Ch. 22 - Prob. 16QCh. 22 - Prob. 17QCh. 22 - Zika virus infection in adults may be asymptomatic...Ch. 22 - Prob. 19QCh. 22 - Prob. 20QCh. 22 - Prob. 21QCh. 22 - Prob. 1VC
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