Microbiology Exam 3 - Rio Salado Exam With vv vv vv vv vv vv vv
The Correct Answers Only vv vv vv vv
Which method can be used for long-term storage? - CORRECT ANSWER✔✔lyophilization
vv vv vv vv vv vv vv vv vv vv
Which of the following is an antiseptic that may be inactivated by some skin bacteria? - CORRECT ANSWER✔
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
✔Hydrogen peroxide vv
What is the premise behind pasteurization? - CORRECT ANSWER✔✔It makes products safer to consume.
vv vv vv vv vv vv vv vv vv vv vv vv vv
Which of the following would be used to sterilize glassware that will be used in a microbiology lab? - CORRECT
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
ANSWER✔✔Autoclave
vv
Antibiotics such as Streptomycin and Erythromycin stop bacterial infections because they prevent the
vv vv vv vv vv vv vv vv vv vv vv vv
bacterial cell from doing which of the following? - CORRECT ANSWER✔✔Assembling polypeptides
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Which of the following is a difference between penicillin and a vancomycin? - CORRECT ANSWER✔✔
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Penicillin interferes with an enzyme involved in cell wall synthesis, whereas vancomycin does not
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Semisynthetic antibiotics differ from natural antibiotics because of which of the following? - CORRECT
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ANSWER✔✔Natural antibiotics are derived from nature
vv vv vv vv vv vv
Which of the following is the difference between soaps and quats? - CORRECT ANSWER✔✔Quats can kill
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microbes
vv
,Why should meat be thawed in the refrigerator? - CORRECT ANSWER✔✔it will decrease the possibility of
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
bacteria growth as it thaws
vv vv vv vv vv
Antibiotic "A" and antibiotic "B" are both effective at suppressing an infection in a patient, however together,
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they have an even more significant effect. This is due to which of the following? - CORRECT ANSWER✔✔
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Synergistic interactions vv
What is the difference between commercial sterilization and sterilization using a sterilant? - CORRECT
vv vv vv vv vv vv vv vv vv vv vv vv vv
ANSWER✔✔A sterilant would be used on a surface
vv vv vv vv vv vv vv vv
Polymyxin E is useful against gram-negative bacteria because of which of the following? - CORRECT ANSWER
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✔✔It breaks down the outer membrane vv vv vv vv vv
Which test can determine if a disinfectant is contaminated? - CORRECT ANSWER✔✔In-use test
vv vv vv vv vv vv vv vv vv vv vv vv
Dry heat and moist heat differ because of which of the following? - CORRECT ANSWER✔✔Moist heat
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penetrates cells more effectively
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Using a narrow-spectrum antibiotic is better than a broad-spectrum antibiotic because of which of the
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following? - CORRECT ANSWER✔✔Narrow-spectrum antibiotics will have less of a chance of killing normal
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microbiota
vv
A person is hiking and runs out of drinking water. They find a stream and decide to use the chlorine tablets
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
they brought to sanitize the water. This would be a good way to make the water safe to drink because of
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which of the following? - CORRECT ANSWER✔✔The chlorine will break up the molecules of the microbes in
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the water
vv vv
When a phlebotomist cleans an area of the skin with alcohol before drawing blood on a patient, their goal is to
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
do which of the following? - CORRECT ANSWER✔✔Lower the number of bacteria on the skin
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,Why is washing your hands with (non-antibacterial) soap and water an effective way to reduce bacteria? -
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
CORRECT ANSWER✔✔It is degerming your hands
vv vv vv vv vv vv
Which of the following would target Mycobacterium tuberculosis? - CORRECT ANSWER✔✔Isoniazid
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Mouthwash, antibacterial soap, and Lysol are all related because of which of the following? - CORRECT
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
ANSWER✔✔They contain phenolic compounds
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Which of the following would be the least selectively toxic treatment for a bacterial infection? - CORRECT
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
ANSWER✔✔Polymyxin B
vv vv
Which of the following would be used to control microbial counts in a liquid that could not be exposed to
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
heat? - CORRECT ANSWER✔✔Filtration
vv vv vv vv
If a person has athlete's foot, the cream they use to treat it will suppress the mold enough for the immune
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
defenses to rid the skin of the infection because of which of the following? - CORRECT ANSWER✔✔The
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
cream is fungistatic
vv vv vv
Why can quinolones target bacterial replication? - CORRECT ANSWER✔✔Bacteria have different enzymes
vv vv vv vv vv vv vv vv vv vv vv
Which scientist's research showed penicillin was an effective antibiotic in treating infections in animals? -
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CORRECT ANSWER✔✔Chain
vv vv
what microbes can be pathogenic? - CORRECT ANSWER✔✔protozoa, fungi, bacteria, helminths, viruses
vv vv vv vv vv vv vv vv vv vv vv
what are most infections caused by? - CORRECT ANSWER✔✔bacteria or viruses
vv vv vv vv vv vv vv vv vv vv
, is illness the same as disease - CORRECT ANSWER✔✔no
vv vv vv vv vv vv vv vv
what does infection mean? - CORRECT ANSWER✔✔infection means that. person has been colonized with a
vv vv vv vv vv vv vv vv vv vv vv vv vv vv
microbial population
vv vv
most bacteria that cause disease in humans are ___ - CORRECT ANSWER✔✔mesophilic
vv vv vv vv vv vv vv vv vv vv vv
what control microbial growth? - CORRECT ANSWER✔✔heat
vv vv vv vv vv vv
how does heat affect cells? - CORRECT ANSWER✔✔denaturation of proteins
vv vv vv vv vv vv vv vv vv vv
the intensity depending on time, temp, and moisture
vv vv vv vv vv vv vv
kill means - CORRECT ANSWER✔✔complete death of a microbe
vv vv vv vv vv vv vv vv
bactericidal - CORRECT ANSWER✔✔indicated that bacterial population is dead
vv vv vv vv vv vv vv vv
bacteriostatic - CORRECT ANSWER✔✔this means the population is low and not increasing in sizevv vv vv vv vv vv vv vv vv vv vv vv vv
sterilzation - CORRECT ANSWER✔✔completely kill everything which is not always neccessary
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sanitize - CORRECT ANSWER✔✔reduce the population to food safe levels
vv vv vv vv vv vv vv vv vv
cooking food can ____ - CORRECT ANSWER✔✔kill most bacteria that will cause infection
vv vv vv vv vv vv vv vv vv vv vv vv
The Correct Answers Only vv vv vv vv
Which method can be used for long-term storage? - CORRECT ANSWER✔✔lyophilization
vv vv vv vv vv vv vv vv vv vv
Which of the following is an antiseptic that may be inactivated by some skin bacteria? - CORRECT ANSWER✔
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
✔Hydrogen peroxide vv
What is the premise behind pasteurization? - CORRECT ANSWER✔✔It makes products safer to consume.
vv vv vv vv vv vv vv vv vv vv vv vv vv
Which of the following would be used to sterilize glassware that will be used in a microbiology lab? - CORRECT
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
ANSWER✔✔Autoclave
vv
Antibiotics such as Streptomycin and Erythromycin stop bacterial infections because they prevent the
vv vv vv vv vv vv vv vv vv vv vv vv
bacterial cell from doing which of the following? - CORRECT ANSWER✔✔Assembling polypeptides
vv vv vv vv vv vv vv vv vv vv vv vv
Which of the following is a difference between penicillin and a vancomycin? - CORRECT ANSWER✔✔
vv vv vv vv vv vv vv vv vv vv vv vv vv vv
Penicillin interferes with an enzyme involved in cell wall synthesis, whereas vancomycin does not
vv vv vv vv vv vv vv vv vv vv vv vv vv
Semisynthetic antibiotics differ from natural antibiotics because of which of the following? - CORRECT
vv vv vv vv vv vv vv vv vv vv vv vv vv
ANSWER✔✔Natural antibiotics are derived from nature
vv vv vv vv vv vv
Which of the following is the difference between soaps and quats? - CORRECT ANSWER✔✔Quats can kill
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
microbes
vv
,Why should meat be thawed in the refrigerator? - CORRECT ANSWER✔✔it will decrease the possibility of
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
bacteria growth as it thaws
vv vv vv vv vv
Antibiotic "A" and antibiotic "B" are both effective at suppressing an infection in a patient, however together,
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
they have an even more significant effect. This is due to which of the following? - CORRECT ANSWER✔✔
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
Synergistic interactions vv
What is the difference between commercial sterilization and sterilization using a sterilant? - CORRECT
vv vv vv vv vv vv vv vv vv vv vv vv vv
ANSWER✔✔A sterilant would be used on a surface
vv vv vv vv vv vv vv vv
Polymyxin E is useful against gram-negative bacteria because of which of the following? - CORRECT ANSWER
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
✔✔It breaks down the outer membrane vv vv vv vv vv
Which test can determine if a disinfectant is contaminated? - CORRECT ANSWER✔✔In-use test
vv vv vv vv vv vv vv vv vv vv vv vv
Dry heat and moist heat differ because of which of the following? - CORRECT ANSWER✔✔Moist heat
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
penetrates cells more effectively
vv vv vv vv
Using a narrow-spectrum antibiotic is better than a broad-spectrum antibiotic because of which of the
vv vv vv vv vv vv vv vv vv vv vv vv vv vv
following? - CORRECT ANSWER✔✔Narrow-spectrum antibiotics will have less of a chance of killing normal
vv vv vv vv vv vv vv vv vv vv vv vv vv vv
microbiota
vv
A person is hiking and runs out of drinking water. They find a stream and decide to use the chlorine tablets
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
they brought to sanitize the water. This would be a good way to make the water safe to drink because of
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
which of the following? - CORRECT ANSWER✔✔The chlorine will break up the molecules of the microbes in
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
the water
vv vv
When a phlebotomist cleans an area of the skin with alcohol before drawing blood on a patient, their goal is to
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
do which of the following? - CORRECT ANSWER✔✔Lower the number of bacteria on the skin
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
,Why is washing your hands with (non-antibacterial) soap and water an effective way to reduce bacteria? -
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
CORRECT ANSWER✔✔It is degerming your hands
vv vv vv vv vv vv
Which of the following would target Mycobacterium tuberculosis? - CORRECT ANSWER✔✔Isoniazid
vv vv vv vv vv vv vv vv vv vv
Mouthwash, antibacterial soap, and Lysol are all related because of which of the following? - CORRECT
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
ANSWER✔✔They contain phenolic compounds
vv vv vv vv
Which of the following would be the least selectively toxic treatment for a bacterial infection? - CORRECT
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
ANSWER✔✔Polymyxin B
vv vv
Which of the following would be used to control microbial counts in a liquid that could not be exposed to
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
heat? - CORRECT ANSWER✔✔Filtration
vv vv vv vv
If a person has athlete's foot, the cream they use to treat it will suppress the mold enough for the immune
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
defenses to rid the skin of the infection because of which of the following? - CORRECT ANSWER✔✔The
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv
cream is fungistatic
vv vv vv
Why can quinolones target bacterial replication? - CORRECT ANSWER✔✔Bacteria have different enzymes
vv vv vv vv vv vv vv vv vv vv vv
Which scientist's research showed penicillin was an effective antibiotic in treating infections in animals? -
vv vv vv vv vv vv vv vv vv vv vv vv vv vv
CORRECT ANSWER✔✔Chain
vv vv
what microbes can be pathogenic? - CORRECT ANSWER✔✔protozoa, fungi, bacteria, helminths, viruses
vv vv vv vv vv vv vv vv vv vv vv
what are most infections caused by? - CORRECT ANSWER✔✔bacteria or viruses
vv vv vv vv vv vv vv vv vv vv
, is illness the same as disease - CORRECT ANSWER✔✔no
vv vv vv vv vv vv vv vv
what does infection mean? - CORRECT ANSWER✔✔infection means that. person has been colonized with a
vv vv vv vv vv vv vv vv vv vv vv vv vv vv
microbial population
vv vv
most bacteria that cause disease in humans are ___ - CORRECT ANSWER✔✔mesophilic
vv vv vv vv vv vv vv vv vv vv vv
what control microbial growth? - CORRECT ANSWER✔✔heat
vv vv vv vv vv vv
how does heat affect cells? - CORRECT ANSWER✔✔denaturation of proteins
vv vv vv vv vv vv vv vv vv vv
the intensity depending on time, temp, and moisture
vv vv vv vv vv vv vv
kill means - CORRECT ANSWER✔✔complete death of a microbe
vv vv vv vv vv vv vv vv
bactericidal - CORRECT ANSWER✔✔indicated that bacterial population is dead
vv vv vv vv vv vv vv vv
bacteriostatic - CORRECT ANSWER✔✔this means the population is low and not increasing in sizevv vv vv vv vv vv vv vv vv vv vv vv vv
sterilzation - CORRECT ANSWER✔✔completely kill everything which is not always neccessary
vv vv vv vv vv vv vv vv vv vv
sanitize - CORRECT ANSWER✔✔reduce the population to food safe levels
vv vv vv vv vv vv vv vv vv
cooking food can ____ - CORRECT ANSWER✔✔kill most bacteria that will cause infection
vv vv vv vv vv vv vv vv vv vv vv vv
