©BRIGHTSTARS EXAM SOLUTIONS
11/16/2024 10:16 AM
MIC224 Final- Howard Exam Questions
With Correct Answers
Kirby- Bauer - answer✔what is another name for the antibiotic sensitivity test?
minimum inhibitory cone - answer✔what does MIC stand for
the minimum amount that will kill the antibiotic - answer✔what does the MIC mean?
it did not kill the abx - answer✔if it is growing what does it mean
it did kill the abx - answer✔if it is not growing what does it mean
Mueller- Hinton Agar - answer✔which agar is used for the antibiotic sensitivity test
we will have to measure the zone of clearing and then compare to the chart to decide if it is
sensitive, intermediate, or resistant - answer✔**UNDERSTAND THE ZONE OF INHIBITION
EVALUATION TABLE** PG. 50
mannitol - answer✔what is the substrate for Mannitol Salt Agar (MSA)
phenol red - answer✔what is the indicator for Mannitol Salt Agar (MSA)
NaCl - answer✔what is the selective agent for Mannitol Salt Agar (MSA)
-yellow
-s. auereus
-fermented - answer✔-what is the positive result of Mannitol Salt Agar (MSA)
-what is the name of this bacteria
-has it been fermented or respired
-red
-s. epidermis
1|Page
, ©BRIGHTSTARS EXAM SOLUTIONS
11/16/2024 10:16 AM
-respired - answer✔-what is the negative result of Mannitol Salt Agar (MSA)
-what is the name of this bacteria
-has it been fermented or respired
-yes
-S. aureus - answer✔This is a MSA plate.
-Did this organism ferment or not?
-what organism is it?
-no
-S. epidermis - answer✔**DO NOT HAVE PIC OF* If there was a MSA plate and it was red.
-Did this organism ferment or not?
-what organism is it?
starch - answer✔what is the substrate for Starch Agar (STA)
iodine - answer✔what is the indicator for Starch Agar (STA)
none - answer✔what is the selective agent for STA
the presence of amylase - answer✔what does a positive STA indicate
amylase - answer✔the organism needs ___ to break down starch, so there is no starch there
will see a zone of clearing - answer✔how do you indicate a positive STA
no zone of clearing - answer✔how do you indicate a negative STA
-yes
-amylase
-positive - answer✔this is a STA plate
-is the zone of clearing present?
-what enzyme did it produce?
-negative or positive?
-no
2|Page
11/16/2024 10:16 AM
MIC224 Final- Howard Exam Questions
With Correct Answers
Kirby- Bauer - answer✔what is another name for the antibiotic sensitivity test?
minimum inhibitory cone - answer✔what does MIC stand for
the minimum amount that will kill the antibiotic - answer✔what does the MIC mean?
it did not kill the abx - answer✔if it is growing what does it mean
it did kill the abx - answer✔if it is not growing what does it mean
Mueller- Hinton Agar - answer✔which agar is used for the antibiotic sensitivity test
we will have to measure the zone of clearing and then compare to the chart to decide if it is
sensitive, intermediate, or resistant - answer✔**UNDERSTAND THE ZONE OF INHIBITION
EVALUATION TABLE** PG. 50
mannitol - answer✔what is the substrate for Mannitol Salt Agar (MSA)
phenol red - answer✔what is the indicator for Mannitol Salt Agar (MSA)
NaCl - answer✔what is the selective agent for Mannitol Salt Agar (MSA)
-yellow
-s. auereus
-fermented - answer✔-what is the positive result of Mannitol Salt Agar (MSA)
-what is the name of this bacteria
-has it been fermented or respired
-red
-s. epidermis
1|Page
, ©BRIGHTSTARS EXAM SOLUTIONS
11/16/2024 10:16 AM
-respired - answer✔-what is the negative result of Mannitol Salt Agar (MSA)
-what is the name of this bacteria
-has it been fermented or respired
-yes
-S. aureus - answer✔This is a MSA plate.
-Did this organism ferment or not?
-what organism is it?
-no
-S. epidermis - answer✔**DO NOT HAVE PIC OF* If there was a MSA plate and it was red.
-Did this organism ferment or not?
-what organism is it?
starch - answer✔what is the substrate for Starch Agar (STA)
iodine - answer✔what is the indicator for Starch Agar (STA)
none - answer✔what is the selective agent for STA
the presence of amylase - answer✔what does a positive STA indicate
amylase - answer✔the organism needs ___ to break down starch, so there is no starch there
will see a zone of clearing - answer✔how do you indicate a positive STA
no zone of clearing - answer✔how do you indicate a negative STA
-yes
-amylase
-positive - answer✔this is a STA plate
-is the zone of clearing present?
-what enzyme did it produce?
-negative or positive?
-no
2|Page
