MBIO 3812 Lab Exam 1 with Questions
and Correct Answers 2025-2026 GRADED
A+ LATEST UPDATED
antiseptics... ,- ,CORRECT ,ANSWER-reduce ,the ,concentration ,of ,microbes ,on ,the
,skin
Hand ,hygiene ,compliance ,rate ,in ,health ,care ,workers? ,- ,CORRECT ,ANSWER-
50-63% ,compliance
best ,method ,for ,preventing ,the ,spread ,of ,infections? ,- ,CORRECT ,ANSWER-
handwashing
two ,types ,of ,media ,for ,culturing ,bacteria ,- ,CORRECT ,ANSWER-broth ,and ,agar
two ,categories ,of ,media ,- ,CORRECT ,ANSWER-defined ,and ,undefined
undefined ,media ,- ,CORRECT ,ANSWER-the ,exact ,ingredients ,and ,their ,amounts
,are ,unknown
defined ,media ,- ,CORRECT ,ANSWER-all ,ingredients ,and ,their ,amounts ,are
,known
single ,most ,important ,thing ,when ,preparing ,media ,- ,CORRECT ,ANSWER-
sterility
most ,effective ,way ,to ,sterilize ,media ,- ,CORRECT ,ANSWER-autoclaving
3 ,parameters ,of ,obtaining ,sterility ,- ,CORRECT ,ANSWER-time, ,temperature, ,and
,pressure ,from ,steam
why ,are ,all ,3 ,parameters ,of ,autoclaving ,necessary? ,- ,CORRECT ,ANSWER-one
,of ,the ,only ,effective ,ways ,to ,kill ,endospores
fast ,exhaust ,- ,CORRECT ,ANSWER-used ,for ,sterilizing ,"dry" ,items
, slow ,exhaust ,- ,CORRECT ,ANSWER-used ,for ,sterilizing ,liquids ,in ,order ,to
,reduce ,volume ,loss
how ,can ,you ,tell ,whether ,something ,has ,been ,autoclaved ,and ,is ,sterile? ,-
,CORRECT ,ANSWER-autoclave ,indicator ,tape ,darkens ,during ,steaming
the ,concept ,behind ,streaking ,for ,isolation ,is ,like... ,- ,CORRECT ,ANSWER-
dilution
ubiquity ,- ,CORRECT ,ANSWER-existing ,or ,being ,everywhere
pathogenic ,microorganisms ,- ,CORRECT ,ANSWER-disease ,causing
opportunistic ,pathogens ,- ,CORRECT ,ANSWER-normally ,inhabit ,or ,bodies
,without ,causing ,disease ,but ,can ,cause ,disease ,when ,conditions ,or ,location ,are
,favorable. ,they ,"seize ,the ,moment."
free-living ,microorganisms ,- ,CORRECT ,ANSWER-non-pathogenic
importance ,of ,colony ,morphology ,- ,CORRECT ,ANSWER-it ,can ,give ,you ,an ,idea
,of ,how ,many ,different ,bacterial ,species ,are ,in ,a ,sample
6 ,characteristics ,of ,colony ,morphology ,- ,CORRECT ,ANSWER-form, ,elevation,
,margin, ,pigmentation, ,texture, ,and ,growth ,patterns
anthrax ,looks ,like... ,- ,CORRECT ,ANSWER-ground ,glass
Bacillus ,- ,CORRECT ,ANSWER-"rods"
1 ,colony ,doesn't ,equal... ,- ,CORRECT ,ANSWER-1 ,bacterial ,cell
CFU/mL ,of ,a ,sample ,- ,CORRECT ,ANSWER-(# ,of ,colonies)/(dilution ,factor ,X
,volume ,plated)
6 ,steps ,to ,biofilm ,formation ,- ,CORRECT ,ANSWER-1. ,surface ,conditioning
2. ,initial ,attachment
3. ,slime ,formation
4. ,secondary ,colonization
5. ,maturation
6. ,dispersal
indwelling ,devices ,- ,CORRECT ,ANSWER-contact ,lens, ,catheters, ,etc.
bacteria ,within ,a ,biofilm ,are ,generally ,more... ,- ,CORRECT ,ANSWER-resistant ,to
,disinfectants/detergents/antibiotics
and Correct Answers 2025-2026 GRADED
A+ LATEST UPDATED
antiseptics... ,- ,CORRECT ,ANSWER-reduce ,the ,concentration ,of ,microbes ,on ,the
,skin
Hand ,hygiene ,compliance ,rate ,in ,health ,care ,workers? ,- ,CORRECT ,ANSWER-
50-63% ,compliance
best ,method ,for ,preventing ,the ,spread ,of ,infections? ,- ,CORRECT ,ANSWER-
handwashing
two ,types ,of ,media ,for ,culturing ,bacteria ,- ,CORRECT ,ANSWER-broth ,and ,agar
two ,categories ,of ,media ,- ,CORRECT ,ANSWER-defined ,and ,undefined
undefined ,media ,- ,CORRECT ,ANSWER-the ,exact ,ingredients ,and ,their ,amounts
,are ,unknown
defined ,media ,- ,CORRECT ,ANSWER-all ,ingredients ,and ,their ,amounts ,are
,known
single ,most ,important ,thing ,when ,preparing ,media ,- ,CORRECT ,ANSWER-
sterility
most ,effective ,way ,to ,sterilize ,media ,- ,CORRECT ,ANSWER-autoclaving
3 ,parameters ,of ,obtaining ,sterility ,- ,CORRECT ,ANSWER-time, ,temperature, ,and
,pressure ,from ,steam
why ,are ,all ,3 ,parameters ,of ,autoclaving ,necessary? ,- ,CORRECT ,ANSWER-one
,of ,the ,only ,effective ,ways ,to ,kill ,endospores
fast ,exhaust ,- ,CORRECT ,ANSWER-used ,for ,sterilizing ,"dry" ,items
, slow ,exhaust ,- ,CORRECT ,ANSWER-used ,for ,sterilizing ,liquids ,in ,order ,to
,reduce ,volume ,loss
how ,can ,you ,tell ,whether ,something ,has ,been ,autoclaved ,and ,is ,sterile? ,-
,CORRECT ,ANSWER-autoclave ,indicator ,tape ,darkens ,during ,steaming
the ,concept ,behind ,streaking ,for ,isolation ,is ,like... ,- ,CORRECT ,ANSWER-
dilution
ubiquity ,- ,CORRECT ,ANSWER-existing ,or ,being ,everywhere
pathogenic ,microorganisms ,- ,CORRECT ,ANSWER-disease ,causing
opportunistic ,pathogens ,- ,CORRECT ,ANSWER-normally ,inhabit ,or ,bodies
,without ,causing ,disease ,but ,can ,cause ,disease ,when ,conditions ,or ,location ,are
,favorable. ,they ,"seize ,the ,moment."
free-living ,microorganisms ,- ,CORRECT ,ANSWER-non-pathogenic
importance ,of ,colony ,morphology ,- ,CORRECT ,ANSWER-it ,can ,give ,you ,an ,idea
,of ,how ,many ,different ,bacterial ,species ,are ,in ,a ,sample
6 ,characteristics ,of ,colony ,morphology ,- ,CORRECT ,ANSWER-form, ,elevation,
,margin, ,pigmentation, ,texture, ,and ,growth ,patterns
anthrax ,looks ,like... ,- ,CORRECT ,ANSWER-ground ,glass
Bacillus ,- ,CORRECT ,ANSWER-"rods"
1 ,colony ,doesn't ,equal... ,- ,CORRECT ,ANSWER-1 ,bacterial ,cell
CFU/mL ,of ,a ,sample ,- ,CORRECT ,ANSWER-(# ,of ,colonies)/(dilution ,factor ,X
,volume ,plated)
6 ,steps ,to ,biofilm ,formation ,- ,CORRECT ,ANSWER-1. ,surface ,conditioning
2. ,initial ,attachment
3. ,slime ,formation
4. ,secondary ,colonization
5. ,maturation
6. ,dispersal
indwelling ,devices ,- ,CORRECT ,ANSWER-contact ,lens, ,catheters, ,etc.
bacteria ,within ,a ,biofilm ,are ,generally ,more... ,- ,CORRECT ,ANSWER-resistant ,to
,disinfectants/detergents/antibiotics
