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BIOS-242
BIOS-242 LAB PRACTICAL REVIEW EXAM
QUESTIONS WITH CORRECT VERIFIED
SOLUTIONS 100% GUARANTEED PASS
1. _____ ____ uses H2O2 to determine if the bacteria can use oxygen or not.
If the test is positive (produces bubbles) the organism is Staphylococci, if
the test is negative (no bubbles) the organisms is streptococci: catalase
test catalase test- positive:
__________ and the organism is ___________: produces bubbles and organism is
staphylococci
2. catalase test- negative:
_________ and the organism is _________: non bubbles and the organism is
streptococci
3. ______ ______ _____(____)- key ingredient is sheep blood; tested on
bacteria inoculated from a patient's throat swab to test for the
presence of streptococci: Blood Agar Plate (BAP)
4. ______ _____- the bacteria's hemolytic enzymes completely break the
blood cells- the pattern results in the media displaying a clear halos
around bacterial colonies (ex. streptococcus pyogenes): beta
haemolysis
BIOS-242
, 38 ______ _____- the bacterial enzymes only partially break down the blood
cells -the results in the media showing a yellowish/greenish/brownish
discoloration (like a bruise) around the colony, indicating incomplete
haemolysis (ex. normal flora): alpha haemolysis
_____ ____- essentially no haemolysis at all- bacteria have no effect on the
red blood cells, and there is no change to the color of the medium (ex.
normal flora): gamma hemolysis
39. ________- exhibit color change when a certain kind of
microorganisms grows: differential
40. _________- allows growth of only certain types of microbes and
inhibits growth of other types of microbes: selective 42. ________:
-BAP
-MSA
-EMB
-MacConkey's:
differential 43.
_______:
-MSA
-MacConkey's
-PEA
-EMB: selective
44. ________ _______- key ingredients are NaCl and mannitol salt; tested on
bacteria inoculated from human skin: MSA plate
45. ______ _______ (pathogenic) is mannitol fermenter and turns MSA a
bright yellow color: staphylococcus aureus
BIOS-242
BIOS-242 LAB PRACTICAL REVIEW EXAM
QUESTIONS WITH CORRECT VERIFIED
SOLUTIONS 100% GUARANTEED PASS
1. _____ ____ uses H2O2 to determine if the bacteria can use oxygen or not.
If the test is positive (produces bubbles) the organism is Staphylococci, if
the test is negative (no bubbles) the organisms is streptococci: catalase
test catalase test- positive:
__________ and the organism is ___________: produces bubbles and organism is
staphylococci
2. catalase test- negative:
_________ and the organism is _________: non bubbles and the organism is
streptococci
3. ______ ______ _____(____)- key ingredient is sheep blood; tested on
bacteria inoculated from a patient's throat swab to test for the
presence of streptococci: Blood Agar Plate (BAP)
4. ______ _____- the bacteria's hemolytic enzymes completely break the
blood cells- the pattern results in the media displaying a clear halos
around bacterial colonies (ex. streptococcus pyogenes): beta
haemolysis
BIOS-242
, 38 ______ _____- the bacterial enzymes only partially break down the blood
cells -the results in the media showing a yellowish/greenish/brownish
discoloration (like a bruise) around the colony, indicating incomplete
haemolysis (ex. normal flora): alpha haemolysis
_____ ____- essentially no haemolysis at all- bacteria have no effect on the
red blood cells, and there is no change to the color of the medium (ex.
normal flora): gamma hemolysis
39. ________- exhibit color change when a certain kind of
microorganisms grows: differential
40. _________- allows growth of only certain types of microbes and
inhibits growth of other types of microbes: selective 42. ________:
-BAP
-MSA
-EMB
-MacConkey's:
differential 43.
_______:
-MSA
-MacConkey's
-PEA
-EMB: selective
44. ________ _______- key ingredients are NaCl and mannitol salt; tested on
bacteria inoculated from human skin: MSA plate
45. ______ _______ (pathogenic) is mannitol fermenter and turns MSA a
bright yellow color: staphylococcus aureus
