MCB 2010 Final Cumulative Study (IRSC)
Exam Questions With Correct Answers
Antoni |van |Leeuwenhoek |was |the |first |person |in |history |to:
view |protozoa |and |bacteria
use |a |magnifying |glass
The |control |of |infectious |disease |remains |challenging |a |century |after |the |understanding |of |
infections |disease |began. |What |contributes |to |the |continuing |challenge?
both |drug-resistant |pathogens |and |emerging |diseases
Microorganisms |characterized |by |the |absence |of |a |nucleus |are |called:
prokaryotes
Which |of |the |following |statements |concerning |Koch's |postulates |is |false?
A |suspected |pathogen |must |be |found |in |the |majority |of |individuals |with |a |particular |disease.
Robert |Koch's |contributions |to |the |foundations |of |modern |microbiology |include
developing |methods |for |isolation |and |identification |of |bacteria
Identification |of |bacteria |in |the |laboratory |usually |begins |with |the |________ |for |placement |in |
one |of |two |large |groups |of |bacteria.
Gram |stain
The |work |of |Lister, |Nightingale, |and |Semmelweis |all |contributed |to |controlling |infectious |
disease |by
developing |methods |for |reducing |healthcare-associated |infections |(HAIs)
The |study |of |the |occurrence, |distribution, |and |spread |of |disease |is |known |as
epidemiology
Edward |Jenner's |efforts |to |prevent |smallpox |provided |the |foundation |for |the |field |of
Immunology
,Whose |search |for |chemicals |that |would |kill |microbes |without |harming |humans |was |the |
foundation |for |chemotherapy?
ehrlich
The |term |for |the |use |of |microorganisms |to |restore |damaged |environments |is
bioremediation
The |acid-fast |stain |is |used |to |stain
All |of |the |following |are |common |to |both |the |Gram |stain |and |the |acid-fast |stain |EXCEPT
a |mordant
A |useful |unit |for |measuring |the |size |of |most |cells |is
micrometers
Which |of |the |following |are |magnifying |lenses?
both |objectives |and |the |oculars
The |light |source |in |a |________ |microscope |is |ultraviolet |(UV) |light.
fluorescence |microscope
You |are |shown |a |micrograph |from |a |light |microscope |in |which |the |specimens |appear |bright |
compared |to |the |background. |The |micrograph |is |probably |from |a(n) |________ |microscope.
dark-field
Unstained |cells |that |lack |pigment |are |best |observed |on |the |________ |microscope.
phase-contrast
High |resolution |images |of |the |internal |structures |of |microbial |cells |are |obtained |using |
________ |microscopes.
transmission |electron
If |a |microbiology |lab |student |left |the |safranin |out |of |the |Gram |stain |procedure, |what |would |be
|the |result?
Gram-positive |cells |would |be |purple |and |Gram-negative |cells |would |be |colorless
Which |of |the |following |chemical |substances |contributes |to |the |unique |characteristics |of |acid-
fast |bacteria?
mycolic |acid
, Some |bacteria |have |an |outer |layer |composed |of |________ |that |protects |them |from |
desiccation |and |allows |them |to |adhere |to |surfaces.
either |polypeptides |or |polysaccharides
Which |of |the |following |prokaryotic |cells |contain |an |outer |membrane?
Gram-negative |bacteria |only
Carl |Woese |proposed |the |concept |of |the |domain |based |on |differences |of |which |of |the |
following |cellular |molecules?
ribosomal |RNA
The |Gram |stain |works |because |of |differences |in |the |________ |of |bacteria.
cell |walls
Which |of |the |following |statements |is |CORRECT |regarding |modern |taxonomy?
Modern |classifications |reflect |evolutionary |relationships |of |organisms.
In |the |Gram |stain |procedure, |iodine |serves |as |a
mordant
Which |of |the |following |is |the |correct |order, |from |largest |to |smallest, |of |the |modern |taxonomic
|hierarchy?
Domain, |Kingdom, |Phylum, |Class, |Order, |Family, |Genus, |Species
Which |of |the |following |may |have |cell |walls |containing |teichoic |acids?
Gram-positive |bacteria |only
Which |of |the |following |bacterial |cell |structures |plays |an |important |role |in |the |creation |of |
biofilms?
both |fimbriae |and |glycocalyces
What |anchors |the |bacterial |flagellum |to |the |cell |wall |and |cytoplasmic |membrane?
basal |body
A |bacterial |cell |moving |toward |light |would |be |an |example |of
positive |phototaxis
Which |of |the |following |statements |concerning |fimbriae |is |TRUE?
Exam Questions With Correct Answers
Antoni |van |Leeuwenhoek |was |the |first |person |in |history |to:
view |protozoa |and |bacteria
use |a |magnifying |glass
The |control |of |infectious |disease |remains |challenging |a |century |after |the |understanding |of |
infections |disease |began. |What |contributes |to |the |continuing |challenge?
both |drug-resistant |pathogens |and |emerging |diseases
Microorganisms |characterized |by |the |absence |of |a |nucleus |are |called:
prokaryotes
Which |of |the |following |statements |concerning |Koch's |postulates |is |false?
A |suspected |pathogen |must |be |found |in |the |majority |of |individuals |with |a |particular |disease.
Robert |Koch's |contributions |to |the |foundations |of |modern |microbiology |include
developing |methods |for |isolation |and |identification |of |bacteria
Identification |of |bacteria |in |the |laboratory |usually |begins |with |the |________ |for |placement |in |
one |of |two |large |groups |of |bacteria.
Gram |stain
The |work |of |Lister, |Nightingale, |and |Semmelweis |all |contributed |to |controlling |infectious |
disease |by
developing |methods |for |reducing |healthcare-associated |infections |(HAIs)
The |study |of |the |occurrence, |distribution, |and |spread |of |disease |is |known |as
epidemiology
Edward |Jenner's |efforts |to |prevent |smallpox |provided |the |foundation |for |the |field |of
Immunology
,Whose |search |for |chemicals |that |would |kill |microbes |without |harming |humans |was |the |
foundation |for |chemotherapy?
ehrlich
The |term |for |the |use |of |microorganisms |to |restore |damaged |environments |is
bioremediation
The |acid-fast |stain |is |used |to |stain
All |of |the |following |are |common |to |both |the |Gram |stain |and |the |acid-fast |stain |EXCEPT
a |mordant
A |useful |unit |for |measuring |the |size |of |most |cells |is
micrometers
Which |of |the |following |are |magnifying |lenses?
both |objectives |and |the |oculars
The |light |source |in |a |________ |microscope |is |ultraviolet |(UV) |light.
fluorescence |microscope
You |are |shown |a |micrograph |from |a |light |microscope |in |which |the |specimens |appear |bright |
compared |to |the |background. |The |micrograph |is |probably |from |a(n) |________ |microscope.
dark-field
Unstained |cells |that |lack |pigment |are |best |observed |on |the |________ |microscope.
phase-contrast
High |resolution |images |of |the |internal |structures |of |microbial |cells |are |obtained |using |
________ |microscopes.
transmission |electron
If |a |microbiology |lab |student |left |the |safranin |out |of |the |Gram |stain |procedure, |what |would |be
|the |result?
Gram-positive |cells |would |be |purple |and |Gram-negative |cells |would |be |colorless
Which |of |the |following |chemical |substances |contributes |to |the |unique |characteristics |of |acid-
fast |bacteria?
mycolic |acid
, Some |bacteria |have |an |outer |layer |composed |of |________ |that |protects |them |from |
desiccation |and |allows |them |to |adhere |to |surfaces.
either |polypeptides |or |polysaccharides
Which |of |the |following |prokaryotic |cells |contain |an |outer |membrane?
Gram-negative |bacteria |only
Carl |Woese |proposed |the |concept |of |the |domain |based |on |differences |of |which |of |the |
following |cellular |molecules?
ribosomal |RNA
The |Gram |stain |works |because |of |differences |in |the |________ |of |bacteria.
cell |walls
Which |of |the |following |statements |is |CORRECT |regarding |modern |taxonomy?
Modern |classifications |reflect |evolutionary |relationships |of |organisms.
In |the |Gram |stain |procedure, |iodine |serves |as |a
mordant
Which |of |the |following |is |the |correct |order, |from |largest |to |smallest, |of |the |modern |taxonomic
|hierarchy?
Domain, |Kingdom, |Phylum, |Class, |Order, |Family, |Genus, |Species
Which |of |the |following |may |have |cell |walls |containing |teichoic |acids?
Gram-positive |bacteria |only
Which |of |the |following |bacterial |cell |structures |plays |an |important |role |in |the |creation |of |
biofilms?
both |fimbriae |and |glycocalyces
What |anchors |the |bacterial |flagellum |to |the |cell |wall |and |cytoplasmic |membrane?
basal |body
A |bacterial |cell |moving |toward |light |would |be |an |example |of
positive |phototaxis
Which |of |the |following |statements |concerning |fimbriae |is |TRUE?
