Portage Microbiology BIOD171 Exam 4
Questions And Answers
True Vor VFalse: VDifferential Vmedia Vis Vbest Vsuited Vfor Vdistinguishing Vbetween Vtwo Vsimilar Vspecies
Vof Vbacteria V- VAnswer V- VTrue V
Growth Vmedia Vdoes Vnot Vcontain Vrestrictive Vfactors, Vwhile Vselective Vmedia Vis Vbest Vused Vto
Vencourage Vthe Vgrowth Vof Vone Vmicrobe Vwhile Vsimultaneously Vdiscouraging Vthe Vgrowth Vof Vthe
Vother. VSince Vtwo Vsimilar Vspecies Vof Vmicrobes Vare Vbeing Vstudied Vthey Vmust Vbe Vdifferentiated
Vunder Vsimilar Vbut Vjust Vslightly Vdifferent Vconditions V(differential Vmedia).
A Vresearcher Vis Vasked Vto Vdetermine Vwhich Vof Vtwo Vvials Vcontains VE Vcoli Vand Vwhich Vcontains
Vsalmonella. VKnowing Vboth Vare VGram-negative Vwhile Vonly Vone Vof Vthem Vis Vcapable Vof
Vfermenting Vlactose, Vwhich Vtype Vof Vmedia Vwould V be Vbest Vsuited? V- VAnswer V- VDifferential
Vmedia
What Vare Vthe Vrequirements Vof Va Vfastidious Vmicrobe? V- VAnswer V- VA Vfastidious Vmicrobe Vis Van
Vorganism Vwith Vcomplex Vgrowth Vrequirements Vsuch Vthat Vif Vabsent Vit Vwill Vnot Vgrow. VEnriched
Vmedias Vthus Vcontain Vthese Vspecific Vand Vessential Vnutrients Vrequired Vfor Vthe Vgrowth Vof Va
Vparticular Vsubset Vof Vmicroorganisms.
True Vor VFalse: VLB Vagar Vis Vclassified Vas Va Vselective, Vnon-differential Vmedia. V- VAnswer V- VFalse.
The Vpolysaccharide-based Vhardening Vagent Vadded Vto VLB Vmedia Vto Vproduce VLB Vagar Vis Vderived
Vfrom Vwhat? V- VAnswer V- VSeaweed V(algae) Vextract.
Blood Vagar Vis Vwhich Vtype Vof Vmedium? VSelect Vall Vthat Vapply.
Selective
Enriched
, Selective Vand VDifferential
Differential V- VAnswer V- VEnriched V
Differential
Match Vthe Vfollowing Vhemolytic Vclass Vwith Vits Vdescription Vof Vactivity.
1. VAlpha Vhemolysis VA. VNo Vchange.
2. VBeta Vhemolysis VB. VGreenish-brown Vcolor
3. VGamma Vhemolysis VC. VDistinct Vzone Vof Vclearing V- VAnswer V- V1. VAlpha Vhemolysis V--> VB.
VGreenish-brown Vcolor
2. VBeta Vhemolysis V---> VC. VDistinct Vzone Vof Vclearing
3. VGamma Vhemolysis V--> VA. VNo Vchange.
Columbia VCNA Vagar Vis Vmost Vclosely Vrelated Vto Vwhich Vmedia: V- VAnswer V- VBlood Vagar
CNA Vagar Vis Vsimilar Vto VBAP Vas Vit Vis Valso Venriched Vwith Vblood Vand Vallows Vfor Vdifferentiation
Vbased Von Vhemolytic Vpatterns.
True Vor VFalse: VChocolate Vagar Vgets Vits Vbrown Vcolor Vfrom Vcocoa Vto Vproduce Van Venriched
Vmedia. V- VAnswer V- VFalse
Chocolate V(cocoa) Vis Vnever Vadded Vto Vthe Vmedia. VThe Vname Vis Vderived Vsimply Vbased Von Vthe
Vcolor Vthat Vactually Vcomes Vfrom V the Vpresence Vof V'cooked' V(lysed) Vred Vblood Vcells Vin Vthe
Vmedia.
An Vunknown Vmicrobe Vis Vstreaked Vonto Va VMacConkey Vagar Vplate. VAfter Van Vovernight Vincubation
Vat V37°C, Vgrowth Vis Vobserved. VWould Va VGram Vstain Vbe Vnecessary? VWhy Vor Vwhy Vnot? V-
VAnswer V- VNo. VA VGram Vstain Vwould Vnot Vbe Vnecessary, Vas Vonly VGram-Negative Vmicrobes Vwill
Vgrow Von VMacConkey Vagar.
Questions And Answers
True Vor VFalse: VDifferential Vmedia Vis Vbest Vsuited Vfor Vdistinguishing Vbetween Vtwo Vsimilar Vspecies
Vof Vbacteria V- VAnswer V- VTrue V
Growth Vmedia Vdoes Vnot Vcontain Vrestrictive Vfactors, Vwhile Vselective Vmedia Vis Vbest Vused Vto
Vencourage Vthe Vgrowth Vof Vone Vmicrobe Vwhile Vsimultaneously Vdiscouraging Vthe Vgrowth Vof Vthe
Vother. VSince Vtwo Vsimilar Vspecies Vof Vmicrobes Vare Vbeing Vstudied Vthey Vmust Vbe Vdifferentiated
Vunder Vsimilar Vbut Vjust Vslightly Vdifferent Vconditions V(differential Vmedia).
A Vresearcher Vis Vasked Vto Vdetermine Vwhich Vof Vtwo Vvials Vcontains VE Vcoli Vand Vwhich Vcontains
Vsalmonella. VKnowing Vboth Vare VGram-negative Vwhile Vonly Vone Vof Vthem Vis Vcapable Vof
Vfermenting Vlactose, Vwhich Vtype Vof Vmedia Vwould V be Vbest Vsuited? V- VAnswer V- VDifferential
Vmedia
What Vare Vthe Vrequirements Vof Va Vfastidious Vmicrobe? V- VAnswer V- VA Vfastidious Vmicrobe Vis Van
Vorganism Vwith Vcomplex Vgrowth Vrequirements Vsuch Vthat Vif Vabsent Vit Vwill Vnot Vgrow. VEnriched
Vmedias Vthus Vcontain Vthese Vspecific Vand Vessential Vnutrients Vrequired Vfor Vthe Vgrowth Vof Va
Vparticular Vsubset Vof Vmicroorganisms.
True Vor VFalse: VLB Vagar Vis Vclassified Vas Va Vselective, Vnon-differential Vmedia. V- VAnswer V- VFalse.
The Vpolysaccharide-based Vhardening Vagent Vadded Vto VLB Vmedia Vto Vproduce VLB Vagar Vis Vderived
Vfrom Vwhat? V- VAnswer V- VSeaweed V(algae) Vextract.
Blood Vagar Vis Vwhich Vtype Vof Vmedium? VSelect Vall Vthat Vapply.
Selective
Enriched
, Selective Vand VDifferential
Differential V- VAnswer V- VEnriched V
Differential
Match Vthe Vfollowing Vhemolytic Vclass Vwith Vits Vdescription Vof Vactivity.
1. VAlpha Vhemolysis VA. VNo Vchange.
2. VBeta Vhemolysis VB. VGreenish-brown Vcolor
3. VGamma Vhemolysis VC. VDistinct Vzone Vof Vclearing V- VAnswer V- V1. VAlpha Vhemolysis V--> VB.
VGreenish-brown Vcolor
2. VBeta Vhemolysis V---> VC. VDistinct Vzone Vof Vclearing
3. VGamma Vhemolysis V--> VA. VNo Vchange.
Columbia VCNA Vagar Vis Vmost Vclosely Vrelated Vto Vwhich Vmedia: V- VAnswer V- VBlood Vagar
CNA Vagar Vis Vsimilar Vto VBAP Vas Vit Vis Valso Venriched Vwith Vblood Vand Vallows Vfor Vdifferentiation
Vbased Von Vhemolytic Vpatterns.
True Vor VFalse: VChocolate Vagar Vgets Vits Vbrown Vcolor Vfrom Vcocoa Vto Vproduce Van Venriched
Vmedia. V- VAnswer V- VFalse
Chocolate V(cocoa) Vis Vnever Vadded Vto Vthe Vmedia. VThe Vname Vis Vderived Vsimply Vbased Von Vthe
Vcolor Vthat Vactually Vcomes Vfrom V the Vpresence Vof V'cooked' V(lysed) Vred Vblood Vcells Vin Vthe
Vmedia.
An Vunknown Vmicrobe Vis Vstreaked Vonto Va VMacConkey Vagar Vplate. VAfter Van Vovernight Vincubation
Vat V37°C, Vgrowth Vis Vobserved. VWould Va VGram Vstain Vbe Vnecessary? VWhy Vor Vwhy Vnot? V-
VAnswer V- VNo. VA VGram Vstain Vwould Vnot Vbe Vnecessary, Vas Vonly VGram-Negative Vmicrobes Vwill
Vgrow Von VMacConkey Vagar.
