Microbiology 020 - General Microbiology » Fall 2020 » Lab Quiz 14

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Question #1
The field of medical microbiology only focuses on the microbes that negatively impact human health.
A.   FALSE
B.   TRUE
Question #2
Many microorganisms that live in or on our bodies offer some benefit by…
A.   competing with other more harmful microorganisms
B.   clearing out waste buildup
C.   lowering the high salt concentration of our skin
D.   all of these are correct
Question #3
The three medically-important genera of gram-positive cocci that can cause opportunistic infections include…
A.   Streptococcus
B.   Enterococcus
C.   Staphylococcus
D.   all of these are correct
Question #4
___________ is the field where medicine and microbiology intersect.
A.   Virology
B.   Medical Microbiology
C.   Bacteriology
D.   Mycology
Question #5
Direct microscopic observation of an unknown organism provides the actual species identity of the organism.
A.   TRUE
B.   FALSE
Question #6
What information can you gather from a gram-stain performed on a patient's isolated sample?
A.   The arrangement of the organism
B.   The shape of the organism
C.   All of these are correct
D.   The gram-stain reaction
Question #7
Blood agar has growth factors and complex nutrients that allows for some fastidious organisms to grow. This makes blood agar a(n)…
A.   selective medium
B.   none of these are correct
C.   differential medium
D.   enrichment medium
Question #8
Dichotomous keys are used to assist with identification of unknown organisms. At each level, the chart will offer ______ choices for a bacterial characteristic.
A.   four
B.   five
C.   two
D.   three

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