MCB 100 FINAL EXAM QUESTIONS AND CORREC
An cautoclave cis cable cto cachieve ctemperatures chigher cthan cthat cof cboiling cwater_____
a. cby cincreasing cthe ctemp chigher cthan cboiling cwater.
b. cby cincreasing cthe ctime cof cexposure cof cboiling cwater.
c. cby cincreasing cpressure.
d. cby cdecreasing cthe cvolume cof cliquid. c- cCORRECT cANS✔✔c. cby cincreasing cpressure.
When cmicrobial ccontrol cmethods care cused, cmicrobes care cdestroyed cat ca cconstant crate; cthere
call cthe cmicrobes cpresent. cThis cmicrobial cdeath crate cis cinfluenced cby call cof cthe cfollowing cfacto
a. cthe cstability cof cthe cproteins cin cthe cbacteria.
b. cthe cnumber cof cmicrobes cthat care cpresent. c
c. cthe clength cof ctime cof cexposure cto cthe ctreatment.
d. cthe cmicrobial cphysiological ccharacteristics.
e. cthe ctoxins cand cmetabolites cproduced cby cthe cbacteria. c- cCORRECT cANS✔✔e. cthe ctoxins ca
cthe cbacteria.
Which cof cthe cfollowing cstatements cabout cpasteurization cis cNOT ctrue?
a. cpasteurization cinvolves cflash cheating cto c135C cfor cabout ca cminute.
b. cpasteurization cis ca cmethod cof csterilization cthat ckills cmicrobes cpresent cin cfood.
c.pasteurization creduces cthe cmicrobial cload cin cheat-sensitive cliquids.
d. cpasteurization cincreases cthe cshelf clife cof cperishable cliquids.
e. cpasteurization ccontrols cmicrobes cthat ccause cspoilage, csucha cas cE. ccoli cand cSalmonella c- cC
cpasteurization cis ca cmethod cof csterilization cthat ckills cmicrobes cpresent cin cfood.
Determine cwhich cof cthe cfollowing cstatements cis ctrue cor cfalse, cthen cselect cthe ccorrect canswer
1. cThe cterm c"antimicrobial cagent" cincludes: cantibiotics, cfungicidal, cand cantiparastitic cagents.
2. cBacteriostatic cagents cinhibit cbacterial cgrowth, cbut cdo cno cnecessarily ckill cthe corganisms caga
3. cAgents cthat cinhibit cbacterial ccell cwall cbiosynthesis ccan cbe cbactericidal.
4. cAntiseptics care csufficiently cnontoxic cthat cthey ccan cbe capplied cto cskin.
a. cT, cT, cT, cT
b. cF, cF, cF, cF
, Which cof cthe cfollowing cantimicrobial cagents cis cthe cmost ctoxic cto chumans?
a. cethylene coxide c
b. cchloramines
c. c70% calcohol
d. cquaternary cammonium c
e. ciodine c- cCORRECT cANS✔✔a. cethylene coxide
Which cof cthe cfollowing cis cused cto csterilize citems cthat cshould cnot, cor ccannot, cbe cexposed cto ch
a. ctriclosan
b. cformaldehyde
c. chydrogen cperoxide
d. cethylene coxide
e. ccalcium chypochlorite c- cCORRECT cANS✔✔d. cethylene coxide
70% calcohol cand cquaternary cammonium ccompounds care ceffective cagainst:
a. cnon-enveloped cviruses
b. cprotozoan ccysts
c. cprions
d. cbacterial cendospores
e. cnon-enveloped cand cenveloped cviruses
f. cenveloped cviruses c- cCORRECT cANS✔✔f. cenveloped cviruses
Contaminated chospital cequipment crepresents ca cdifficult cenvironment cto ccontrol charmful cmicrob
cfollowing cstatements cregarding cinfluences cthat caffect cdisinfection cof chospital cequipment cis ctrue
a. cAntimicrobial cagents cwork cbest cunder creduced ctemps cand cpressures.
b. cThe cpresence cof corganic cmatter, csuch cas cdried cblood cor cprotein, cwill cnot caffect cthe caction
c. cThe ccell cwalls cof cmany cGram cnegative cbacteria care cespecially cresistant cto cmany cchemicals
cmicrobes.
d. cHalogens care csurface-active cagents cthat cact cby cdecreasing cthe csurface ctension cso cthat cmi
cremoved. c- cCORRECT cANS✔✔c. cThe ccell cwalls cof cmany cGram cnegative cbacteria care cespec
cchemicals cthat care cused cto cdestroy cmicrobes.
Most cantibiotics ccome cfrom cwhat csource?
a. cChemical csynthesis
b. cAlgae
c. cPlants
d. cBacteria
e. cFungi c- cCORRECT cANS✔✔d. cBacteria
The cproperty cof ca cchemical cagent cto cbe cmore cinhibitory cfor ca cpathogen cthat cfor cthe cpathogen
cas_______.
a. cselective ctoxicity
b. cchemotherapuetic
c. cmolecular cselectivity
d. cbioavailability c- cCORRECT cANS✔✔a. cselective ctoxicity
Which cof cthe cfollowing cstatements cBEST cdescribes cwhy cit cis cdifficult cto cdevelop cantiviral cdrug
An cautoclave cis cable cto cachieve ctemperatures chigher cthan cthat cof cboiling cwater_____
a. cby cincreasing cthe ctemp chigher cthan cboiling cwater.
b. cby cincreasing cthe ctime cof cexposure cof cboiling cwater.
c. cby cincreasing cpressure.
d. cby cdecreasing cthe cvolume cof cliquid. c- cCORRECT cANS✔✔c. cby cincreasing cpressure.
When cmicrobial ccontrol cmethods care cused, cmicrobes care cdestroyed cat ca cconstant crate; cthere
call cthe cmicrobes cpresent. cThis cmicrobial cdeath crate cis cinfluenced cby call cof cthe cfollowing cfacto
a. cthe cstability cof cthe cproteins cin cthe cbacteria.
b. cthe cnumber cof cmicrobes cthat care cpresent. c
c. cthe clength cof ctime cof cexposure cto cthe ctreatment.
d. cthe cmicrobial cphysiological ccharacteristics.
e. cthe ctoxins cand cmetabolites cproduced cby cthe cbacteria. c- cCORRECT cANS✔✔e. cthe ctoxins ca
cthe cbacteria.
Which cof cthe cfollowing cstatements cabout cpasteurization cis cNOT ctrue?
a. cpasteurization cinvolves cflash cheating cto c135C cfor cabout ca cminute.
b. cpasteurization cis ca cmethod cof csterilization cthat ckills cmicrobes cpresent cin cfood.
c.pasteurization creduces cthe cmicrobial cload cin cheat-sensitive cliquids.
d. cpasteurization cincreases cthe cshelf clife cof cperishable cliquids.
e. cpasteurization ccontrols cmicrobes cthat ccause cspoilage, csucha cas cE. ccoli cand cSalmonella c- cC
cpasteurization cis ca cmethod cof csterilization cthat ckills cmicrobes cpresent cin cfood.
Determine cwhich cof cthe cfollowing cstatements cis ctrue cor cfalse, cthen cselect cthe ccorrect canswer
1. cThe cterm c"antimicrobial cagent" cincludes: cantibiotics, cfungicidal, cand cantiparastitic cagents.
2. cBacteriostatic cagents cinhibit cbacterial cgrowth, cbut cdo cno cnecessarily ckill cthe corganisms caga
3. cAgents cthat cinhibit cbacterial ccell cwall cbiosynthesis ccan cbe cbactericidal.
4. cAntiseptics care csufficiently cnontoxic cthat cthey ccan cbe capplied cto cskin.
a. cT, cT, cT, cT
b. cF, cF, cF, cF
, Which cof cthe cfollowing cantimicrobial cagents cis cthe cmost ctoxic cto chumans?
a. cethylene coxide c
b. cchloramines
c. c70% calcohol
d. cquaternary cammonium c
e. ciodine c- cCORRECT cANS✔✔a. cethylene coxide
Which cof cthe cfollowing cis cused cto csterilize citems cthat cshould cnot, cor ccannot, cbe cexposed cto ch
a. ctriclosan
b. cformaldehyde
c. chydrogen cperoxide
d. cethylene coxide
e. ccalcium chypochlorite c- cCORRECT cANS✔✔d. cethylene coxide
70% calcohol cand cquaternary cammonium ccompounds care ceffective cagainst:
a. cnon-enveloped cviruses
b. cprotozoan ccysts
c. cprions
d. cbacterial cendospores
e. cnon-enveloped cand cenveloped cviruses
f. cenveloped cviruses c- cCORRECT cANS✔✔f. cenveloped cviruses
Contaminated chospital cequipment crepresents ca cdifficult cenvironment cto ccontrol charmful cmicrob
cfollowing cstatements cregarding cinfluences cthat caffect cdisinfection cof chospital cequipment cis ctrue
a. cAntimicrobial cagents cwork cbest cunder creduced ctemps cand cpressures.
b. cThe cpresence cof corganic cmatter, csuch cas cdried cblood cor cprotein, cwill cnot caffect cthe caction
c. cThe ccell cwalls cof cmany cGram cnegative cbacteria care cespecially cresistant cto cmany cchemicals
cmicrobes.
d. cHalogens care csurface-active cagents cthat cact cby cdecreasing cthe csurface ctension cso cthat cmi
cremoved. c- cCORRECT cANS✔✔c. cThe ccell cwalls cof cmany cGram cnegative cbacteria care cespec
cchemicals cthat care cused cto cdestroy cmicrobes.
Most cantibiotics ccome cfrom cwhat csource?
a. cChemical csynthesis
b. cAlgae
c. cPlants
d. cBacteria
e. cFungi c- cCORRECT cANS✔✔d. cBacteria
The cproperty cof ca cchemical cagent cto cbe cmore cinhibitory cfor ca cpathogen cthat cfor cthe cpathogen
cas_______.
a. cselective ctoxicity
b. cchemotherapuetic
c. cmolecular cselectivity
d. cbioavailability c- cCORRECT cANS✔✔a. cselective ctoxicity
Which cof cthe cfollowing cstatements cBEST cdescribes cwhy cit cis cdifficult cto cdevelop cantiviral cdrug
