1. Decimal Reduction time is a measurement of   a. How long it takes for a given treatment to kill 100% of a microbial population. b. How long it takes for a given treatment to kill 90% of a microbial population. c. What percentage of a microbial population is removed during a given antimicrobial treatment. d. How long it takes to inhibit the growth of 99% of a population. e. How long it takes for a given treatment to kill 10% of a microbial population.

An Illustrated Guide To Vet Med Term
4th Edition
ISBN:9781305465763
Author:ROMICH
Publisher:ROMICH
Chapter11: The Great Communicator
Section: Chapter Questions
Problem 14MC
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1. Decimal Reduction time is a measurement of

 

a. How long it takes for a given treatment to kill 100% of a microbial population.

b. How long it takes for a given treatment to kill 90% of a microbial population.

c. What percentage of a microbial population is removed during a given antimicrobial treatment.

d. How long it takes to inhibit the growth of 99% of a population.

e. How long it takes for a given treatment to kill 10% of a microbial population.

 

2. Bacillus megaterium can be isolated from other Bacillus species due to its ability to (think carefully!)

 

a. Metabolize glucose

b. Thrive on a diet of a simple sugar and inorganic nitrogen

c. Survive pasteurization

d. Grow rapidly at temperatures well above human body temperature

e. Grow in a fungus-like pattern

 

3. Like acid-fast staining, the endospore stain requires

 

a. Dry heat

b. High pressure treatment

c. Carbol Fuchsin

d. Methylene Blue

e. Moist heat

f. Organic solvents for penetration

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