Nester's Microbiology: A Human Perspective
9th Edition
ISBN: 9781259709999
Author: Denise G. Anderson Lecturer, Sarah Salm, Deborah Allen
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 5, Problem 2MC
The D value is defined as the time it takes to kill
a) all bacteria in a population.
b) all pathogens in a population.
c) 99.9% of bacteria in a population.
d) 90% of bacteria in a population.
e) 10% of bacteria in a population.
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Students have asked these similar questions
18. All the followings can be produced through Industrial Microbiology techniques except: a) antibiotics b) Amino Acids c) steroids d) polysaccharides19. The new process for cleaning the environment through bioorganic method using bacteria which genome has been modified is called: a) Bioconversion b) Biotechnology c) Bioinformatics d) Bioremediation20) What was the main reason to make cheese in the past
7) Identify the most correct choice:
a) The time required for a bacterial population to double is called generation
time
Ob) Nitrogen is required by the organisms mainly to produce ATP.
c) Agar is a common food source for the bacteria.
d) A colony is usually a mixture of various bacterial organisms.
e) a and c
Why can bacteria undergo
rapid evolutionary change?
a) Bacteria pass through
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b) Bacteria mutate at high
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c) Bacterial populations
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- 8:23 v
Chapter 5 Solutions
Nester's Microbiology: A Human Perspective
Ch. 5 - How is preservation different from pasteurization?Ch. 5 -
2. What is the most chemically resistant...Ch. 5 - Explain why it takes longer to kill a population...Ch. 5 - What is the primary reason that wine is...Ch. 5 -
5. What is the primary reason that milk is...Ch. 5 - When canning, why are low-acid foods processed at...Ch. 5 - How are heat-sensitive liquids sterilized?Ch. 5 -
8. How does microwaving a food product kill...Ch. 5 -
9. How is an iodophore different from a tincture...Ch. 5 - Name two products commonly sterilized using...
Ch. 5 - Unlike a disinfectant, an antiseptic a) sanitizes...Ch. 5 - The D value is defined as the time it takes to...Ch. 5 - Prob. 3MCCh. 5 - Prob. 4MCCh. 5 - Which concentration of alcohol is the most...Ch. 5 - All of the following could be used to sterilize an...Ch. 5 - All of the following are routinely used to...Ch. 5 - Aseptically boxed juices and cream containers are...Ch. 5 - Commercial canning processes are designed to...Ch. 5 -
10. Which of the following is false?
a) A...Ch. 5 - An agriculture extension agent is preparing...Ch. 5 - As a microbiologist representing a food...Ch. 5 - This graph shows the time it takes to kill...Ch. 5 -
2. This diagram shows the filter paper method...
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- Substances that are naturally produced by certain microrganisms that can inhibit or destroy other microrganisms are called a) semisynthetic drugs b) narrow-spectrum drugs c) antibiotics d) synthetic drugsarrow_forwardAntibotic/drug resistance in bacteria results from mutations induced by the anitbiotic which enhance fitness of the bacteria ensuring their survival. a) True b) Falsearrow_forwardA population of E. coli is grown in a gluCose medium and transferred daily into a fresh medium when it is in stationary phase. Which of the following is likely to be true immediately prior to being transferred? O a) N< K b) The population growth rate is at its highest c) The population growth rate is exponential d) The population has reached the carrying capacity e) The number of individual bacteria that die is higher than the number of binary fissionsarrow_forward
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