Food Microbiology exam questions with
|\ |\ |\ |\ |\
answers
FSIS (Food Safety and Inspection Service) is the agency in charge
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
of HACCP regulation for seafood and juice products
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T or F - CORRECT ANSWERS ✔✔False
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E. coli and coliforms can be used as indicator microorganisms
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
because: |\
a. Their growth and numbers have a direct negative correlation
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
with product quality|\ |\
b. Their enumeration period is usually fast, and colonies can be
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
counted after 1 hour of incubation |\ |\ |\ |\ |\
c. Their growth and numbers have a direct positive correlation with
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
product quality
|\ |\
d. they are not good indicators. Your instructor just loves E. coli -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔c. Their growth and numbers have a direct
|\ |\ |\ |\ |\ |\ |\ |\ |\
positive correlation with product quality
|\ |\ |\ |\ |\
Agricultural water and biological soil amendments are |\ |\ |\ |\ |\ |\ |\
requirements for which FSMA rule: |\ |\ |\ |\
a. Imported Food
|\ |\
b. Preventive Controls for Food for Animal
|\ |\ |\ |\ |\ |\
c. Preventive Controls for Human Food
|\ |\ |\ |\ |\
d. Produce Safety
|\ |\
,e. It is not required by and FSMA rule - CORRECT ANSWERS ✔✔d.
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Produce Saftey |\
The ability of a given cell to grow size of a macroscopic colony
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
depends on many things such as? - CORRECT ANSWERS ✔✔the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cells physiological state, the growth medium used, incubation
|\ |\ |\ |\ |\ |\ |\ |\
temperature
How many cells are there in one CFU?
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a. 10^19 cells
|\ |\
b. 1 cell
|\ |\
c. 79,000 cells
|\ |\
d. we can't say an exact number; the assumption is that one
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
colony originates from one cell - CORRECT ANSWERS ✔✔d. we
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
can't say an exact number; the assumption is that one colony
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
originates from one cell |\ |\ |\
You are given and enriched sample known to contain a specific
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
bacterial pathogen. You have been asked to perform a test for
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
confirmation of the target pathogen. You know that your sample |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
contains less than 10^2 CFU/g of that pathogen. Which method
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
will be more accurate to confirm this microorganism?
|\ |\ |\ |\ |\ |\ |\
a. Immunological method
|\ |\
b. Molecular method
|\ |\
c. Standard plating
|\ |\
d. Gram stain - CORRECT ANSWERS ✔✔b. Molecular method
|\ |\ |\ |\ |\ |\ |\ |\
, The main purpose of fermentation for microorganisms is:
|\ |\ |\ |\ |\ |\ |\
a. Make energy/energy conservation
|\ |\ |\
b. Obtain nutrients
|\ |\
c. Change texture of foods
|\ |\ |\ |\
d. Decrease pH of foods - CORRECT ANSWERS ✔✔a. Make
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
energy/energy conservation |\
A nationwide collaboration that enables all levels of public health
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
(local, state, territorial, federal, and international) to share
|\ |\ |\ |\ |\ |\ |\ |\
notifiable disease related health information. Public health uses
|\ |\ |\ |\ |\ |\ |\ |\
this information to monitor, control and prevent the occurrence
|\ |\ |\ |\ |\ |\ |\ |\ |\
and spread of state-reportable and nationally notifiable infectious
|\ |\ |\ |\ |\ |\ |\ |\
and noninfectious diseases and conditions. This refers to:
|\ |\ |\ |\ |\ |\ |\
a. HACCP
|\
b. Healthy People 2020
|\ |\ |\
c. FoodNet
|\
d. National Notifiable Diseases Surveillance System - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔d. National Notifiable Diseases Surveillance System
|\ |\ |\ |\ |\ |\
The CFU per gram values derived from plate counts are also
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
influenced by? - CORRECT ANSWERS ✔✔intrinsic factors
|\ |\ |\ |\ |\ |\
MPN methods (most probable number) are used to? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔estimate the MPN of organisms in a sample when
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
only low levels <30 CFU/ml are present.
|\ |\ |\ |\ |\ |\
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answers
FSIS (Food Safety and Inspection Service) is the agency in charge
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
of HACCP regulation for seafood and juice products
|\ |\ |\ |\ |\ |\ |\
T or F - CORRECT ANSWERS ✔✔False
|\ |\ |\ |\ |\ |\
E. coli and coliforms can be used as indicator microorganisms
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
because: |\
a. Their growth and numbers have a direct negative correlation
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
with product quality|\ |\
b. Their enumeration period is usually fast, and colonies can be
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
counted after 1 hour of incubation |\ |\ |\ |\ |\
c. Their growth and numbers have a direct positive correlation with
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
product quality
|\ |\
d. they are not good indicators. Your instructor just loves E. coli -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔c. Their growth and numbers have a direct
|\ |\ |\ |\ |\ |\ |\ |\ |\
positive correlation with product quality
|\ |\ |\ |\ |\
Agricultural water and biological soil amendments are |\ |\ |\ |\ |\ |\ |\
requirements for which FSMA rule: |\ |\ |\ |\
a. Imported Food
|\ |\
b. Preventive Controls for Food for Animal
|\ |\ |\ |\ |\ |\
c. Preventive Controls for Human Food
|\ |\ |\ |\ |\
d. Produce Safety
|\ |\
,e. It is not required by and FSMA rule - CORRECT ANSWERS ✔✔d.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Produce Saftey |\
The ability of a given cell to grow size of a macroscopic colony
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
depends on many things such as? - CORRECT ANSWERS ✔✔the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cells physiological state, the growth medium used, incubation
|\ |\ |\ |\ |\ |\ |\ |\
temperature
How many cells are there in one CFU?
|\ |\ |\ |\ |\ |\ |\
a. 10^19 cells
|\ |\
b. 1 cell
|\ |\
c. 79,000 cells
|\ |\
d. we can't say an exact number; the assumption is that one
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
colony originates from one cell - CORRECT ANSWERS ✔✔d. we
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
can't say an exact number; the assumption is that one colony
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
originates from one cell |\ |\ |\
You are given and enriched sample known to contain a specific
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
bacterial pathogen. You have been asked to perform a test for
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
confirmation of the target pathogen. You know that your sample |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
contains less than 10^2 CFU/g of that pathogen. Which method
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
will be more accurate to confirm this microorganism?
|\ |\ |\ |\ |\ |\ |\
a. Immunological method
|\ |\
b. Molecular method
|\ |\
c. Standard plating
|\ |\
d. Gram stain - CORRECT ANSWERS ✔✔b. Molecular method
|\ |\ |\ |\ |\ |\ |\ |\
, The main purpose of fermentation for microorganisms is:
|\ |\ |\ |\ |\ |\ |\
a. Make energy/energy conservation
|\ |\ |\
b. Obtain nutrients
|\ |\
c. Change texture of foods
|\ |\ |\ |\
d. Decrease pH of foods - CORRECT ANSWERS ✔✔a. Make
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
energy/energy conservation |\
A nationwide collaboration that enables all levels of public health
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
(local, state, territorial, federal, and international) to share
|\ |\ |\ |\ |\ |\ |\ |\
notifiable disease related health information. Public health uses
|\ |\ |\ |\ |\ |\ |\ |\
this information to monitor, control and prevent the occurrence
|\ |\ |\ |\ |\ |\ |\ |\ |\
and spread of state-reportable and nationally notifiable infectious
|\ |\ |\ |\ |\ |\ |\ |\
and noninfectious diseases and conditions. This refers to:
|\ |\ |\ |\ |\ |\ |\
a. HACCP
|\
b. Healthy People 2020
|\ |\ |\
c. FoodNet
|\
d. National Notifiable Diseases Surveillance System - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔d. National Notifiable Diseases Surveillance System
|\ |\ |\ |\ |\ |\
The CFU per gram values derived from plate counts are also
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
influenced by? - CORRECT ANSWERS ✔✔intrinsic factors
|\ |\ |\ |\ |\ |\
MPN methods (most probable number) are used to? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔estimate the MPN of organisms in a sample when
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
only low levels <30 CFU/ml are present.
|\ |\ |\ |\ |\ |\
