Microbiology CSCC Romain Test 2
UPDATED Exam Questions and CORRECT
Answers
What are ways in which microbial control has been achieved historically? - CORRECT
ANSWER - Food preservation. Controlling disease. Drinking water preservation.
The ending "cide" means? - CORRECT ANSWER - To kill
The ending "stasis" means? - CORRECT ANSWER - To stand still
Which "cide" term is generic and only mean that you are killing some microbes? - CORRECT
ANSWER - germicide and microbicide
if you can destroy _____ then you can destroy anything - CORRECT ANSWER -
sporicide
regarding the term "stasis", are you killing anything? - CORRECT ANSWER - no
how do you put an organism in a static state? - CORRECT ANSWER - stop the growth so
the cells are not actively dividing
when is something in a state or microbial death? - CORRECT ANSWER - when cells are
no longer reproducing, and the structure is dysfunctional
is death instantaneous? - CORRECT ANSWER - no it continues in a logarithmic manner
what are some physical control examples? - CORRECT ANSWER - heat. infiltration.
irradiation. mechanical removal.
,what are some chemical control examples? - CORRECT ANSWER - antimicrobial
chemicals.
sterilization means: - CORRECT ANSWER - removal of all microorganisms
disinfection means: - CORRECT ANSWER - eliminates most pathogens
pasteurization is: - CORRECT ANSWER - a brief heat treatment used to reduce organisms
that cause food spoilage
which three terms are generic and mean that you are reducing the microbial population? -
CORRECT ANSWER - decontamination, degerming, sanitizing
which term means that you are adding something or using a process that delays the spoilage of
perishable items? - CORRECT ANSWER - preservation
how do microbial control methods vary depending on your needs? - CORRECT
ANSWER - depend on the situation and degree of control that is required.
choosing a microbial control procedure depends on what factors? - CORRECT
ANSWER - type of microbe
extent of contamination-number of organisms
environment
risk of infection
composition of infected item
what are some of the hardest microbes to kill? - CORRECT ANSWER - endospores
(hardest)
naked viruses
, why is heat useful as a control method? - CORRECT ANSWER - destroys most
microorganisms and visuses
what are some examples of moist heat? - CORRECT ANSWER - boiling
pasteurization
steam
what are examples of dry heat? - CORRECT ANSWER - dry heat oven
incineration
why is moist heat more effective than dry heat? - CORRECT ANSWER - requires less
time and lower temperature
how does filtration work for microbial control? - CORRECT ANSWER - the filter is small
(pore size) and only allows certain things through it, leaving behind organisms that are not
wanted in the filter
what types of things can be filtered? - CORRECT ANSWER - water
air
what does radiation affect in the cell? - CORRECT ANSWER - atoms
how does ionizing radiation work? - CORRECT ANSWER - breaks down DNA, ejects
orbital electrons from an atom
what are examples of ionizing radiation? - CORRECT ANSWER - making beef jerky
how does non ionizing radiation work? - CORRECT ANSWER - raises atoms energy state
UPDATED Exam Questions and CORRECT
Answers
What are ways in which microbial control has been achieved historically? - CORRECT
ANSWER - Food preservation. Controlling disease. Drinking water preservation.
The ending "cide" means? - CORRECT ANSWER - To kill
The ending "stasis" means? - CORRECT ANSWER - To stand still
Which "cide" term is generic and only mean that you are killing some microbes? - CORRECT
ANSWER - germicide and microbicide
if you can destroy _____ then you can destroy anything - CORRECT ANSWER -
sporicide
regarding the term "stasis", are you killing anything? - CORRECT ANSWER - no
how do you put an organism in a static state? - CORRECT ANSWER - stop the growth so
the cells are not actively dividing
when is something in a state or microbial death? - CORRECT ANSWER - when cells are
no longer reproducing, and the structure is dysfunctional
is death instantaneous? - CORRECT ANSWER - no it continues in a logarithmic manner
what are some physical control examples? - CORRECT ANSWER - heat. infiltration.
irradiation. mechanical removal.
,what are some chemical control examples? - CORRECT ANSWER - antimicrobial
chemicals.
sterilization means: - CORRECT ANSWER - removal of all microorganisms
disinfection means: - CORRECT ANSWER - eliminates most pathogens
pasteurization is: - CORRECT ANSWER - a brief heat treatment used to reduce organisms
that cause food spoilage
which three terms are generic and mean that you are reducing the microbial population? -
CORRECT ANSWER - decontamination, degerming, sanitizing
which term means that you are adding something or using a process that delays the spoilage of
perishable items? - CORRECT ANSWER - preservation
how do microbial control methods vary depending on your needs? - CORRECT
ANSWER - depend on the situation and degree of control that is required.
choosing a microbial control procedure depends on what factors? - CORRECT
ANSWER - type of microbe
extent of contamination-number of organisms
environment
risk of infection
composition of infected item
what are some of the hardest microbes to kill? - CORRECT ANSWER - endospores
(hardest)
naked viruses
, why is heat useful as a control method? - CORRECT ANSWER - destroys most
microorganisms and visuses
what are some examples of moist heat? - CORRECT ANSWER - boiling
pasteurization
steam
what are examples of dry heat? - CORRECT ANSWER - dry heat oven
incineration
why is moist heat more effective than dry heat? - CORRECT ANSWER - requires less
time and lower temperature
how does filtration work for microbial control? - CORRECT ANSWER - the filter is small
(pore size) and only allows certain things through it, leaving behind organisms that are not
wanted in the filter
what types of things can be filtered? - CORRECT ANSWER - water
air
what does radiation affect in the cell? - CORRECT ANSWER - atoms
how does ionizing radiation work? - CORRECT ANSWER - breaks down DNA, ejects
orbital electrons from an atom
what are examples of ionizing radiation? - CORRECT ANSWER - making beef jerky
how does non ionizing radiation work? - CORRECT ANSWER - raises atoms energy state
