BIOS 255 Comprehensive Exam Questions with Correct Answers 2025

BIOS 255 Comprehensive Exam Questions
with Correct Answers 2025
WhatAisAhomeostasis?A-AcorrectAanswers-
maintenanceAofAaAstableAinternalAenvironmentAwithAtheAcontributionAofAallAorganA
systems
WhatAareAtheAcomponentsAofAaAhomeostaticAmechanism?A-AcorrectAanswers--Stimulus
-Receptors
-ControlAcenter
-Effector
-Response
WhatAisAaAnegativeAfeedbackAmechanism?A-AcorrectAanswers-
BodyAREVERSES,AorAgoesAagainst,AanAoriginalAstimulusAtoAreturnAtoAhomeostasis
Example:ABloodAglucoseAregulationAafterAeating.
WhatAisAaApositiveAfeedbackAmechanism?A-AcorrectAanswers-
AmplifiesAtheAchangeAfromAtheAnormalAlevel.A(AgreesAwithAtheAchange)
Example:AChildbirth,AbloodAclotting
WhatAfeedbackAmechanismAisAmostAcommon?A-AcorrectAanswers-negative
InferiorA-AcorrectAanswers-Below;AatAaAlowerAlevel
SuperiorA-AcorrectAanswers-Above;AhigherAlevel
LateralA-AcorrectAanswers-Side;AAwayAfromAtheAmidlineAofAtheAbody
ProximalA-AcorrectAanswers-CloserAtoAtheApointAofAattachment
DistalA-AcorrectAanswers-FatherAawayAfromAtheApointAofAattachment
MedialA-AcorrectAanswers-TowardAtheAmidlineAofAtheAbody
SagittalA-AcorrectAanswers-dividesAbodyAintoAleftAandAright
TransverseA-AcorrectAanswers-DividesAbodyAintoAupperAandAlowerAparts
AnteriorA-AcorrectAanswers-towardAtheAfrontAofAtheAbody
PosteriorA-AcorrectAanswers-towardAtheAbackAofAtheAbody
FrontalAplaneA-AcorrectAanswers-
DividesAtheAbodyAintoAanteriorA(front)AandAposteriorA(back)Aportions.
WhichApartAofAtheAatomAisAinvolvedAinAchemicalAreactions?A-AcorrectAanswers-
Electrons
WhichApartAofAtheAatomAmakesAupAtheAatomicAnumber?A-AcorrectAanswers-Protons
pHAscaleA-AcorrectAanswers-MeasurementAofAhydrogenAionAconcentration
-ApHA<A7:AAcidic
-pHA>A7:AAlkalineA(basic)
-pHA=A7:Aneutral
WhatAisAtheAmainAfunctionAonAroughAendoplasmicAreticulum?A-AcorrectAanswers-
ProteinAsynthesis
WhatAkindAofAcellAdivisionAresultsAinAaAdiploid,AincreasingAtheAnumberAofAcells?A-
AcorrectAanswers-Mitosis

HowAmanyApairsAofAchromosomesAdoAhumansAhave?A-AcorrectAanswers-23Apairs
WhatAkindAofAcellAdivisionAresultsAinAaAhaploid?A-AcorrectAanswers-Meiosis
MeiosisAIA-AcorrectAanswers-SplitsAgeneticAmaterialAinAhalf,AproducingAaAdiploid
MeiosisAIIA-AcorrectAanswers-SeparatesAsisterAchromatids
-fourAhaploidAdaughterAcells
-developAintoAeggAorAsperm

, ProphaseA-AcorrectAanswers-
ChromosomesAbecomeAvisible,AnuclearAenvelopeAdissolves,AspindleAforms
MetaphaseA-AcorrectAanswers-ChromosomesAlineAupAinAtheAmiddleAofAtheAcell
AnaphaseA-AcorrectAanswers-
ChromosomesAseparateAandAmoveAtoAoppositeAendsAofAtheAcell
TelophaseA-AcorrectAanswers-
ChromosomesAmoveAtoAoppositeAendsAofAtheAcellAandAtwoAnucleiAareAformed.
WhatAareAtheA4AtypesAofAtissues?A-AcorrectAanswers-
epithelial,Aconnective,Amuscle,Anervous
WhatAareAtheApropertiesAofAepithelialAtissue?A-AcorrectAanswers--
CellsAsitAonAbasementAmembrane
-HasAapicalAsurfaceAandAbasalAsurface
-Avascular
-Polarity
-Innervated
WhatAoccursAwhenAtheAapicalAsurfaceAofAepithelialAcellsAseparateAfromAtheAbasementAl
ayer?A-AcorrectAanswers-CellAregenerationAisAtriggered.
WhereAcanAsimpleAsquamousAepitheliumAbeAfound?A-AcorrectAanswers-
heart,AbloodAvessels,Akidneys,Alungs
WhereAcanAyouAfindAtransitionalAepithelium?A-AcorrectAanswers-urinaryAbladder
WhereAcanAcolumnarAepitheliumAbeAfound?A-AcorrectAanswers-
passagesAofAtheArespiratoryAsystem
variousAtubesAofAtheAreproductiveAsystems
WhatAfunctionAdoesAciliaAhave?A-AcorrectAanswers-
HelpsAmoveAthingsAalongA(movesAmucousAandAforeignAparticlesAaway)
merocrineAglandsA-AcorrectAanswers-SecreteAtheirAproductsAbyAexocytosis
-SalivaryAglands
-SweatAglands
-PancreaticAglands
apocrineAglandsA-AcorrectAanswers-**MammaryAglands
-accumulatesAproductsAwithinAbutAonlyAtheAapexAruptures
holocrineAglandsA-AcorrectAanswers-**SebaceousAglands
-accumulateAtheirAproductsAwithinAthemAuntilAtheyArupture
WhatAareAsomeAexamplesAofAconnectiveAtissue?A-AcorrectAanswers--
LooseAconnectiveAtissue
-Bone
-Cartilage
-Blood
WhatAareAtheAthreeAmainAelementsAofAconnectiveAtissue?A-AcorrectAanswers--Cells
-Fibers
-GroundAsubstance
WhatAareAtheAdifferentAtypesAofAconnectiveAtissueAfibers?A-AcorrectAanswers--Reticular
-Elastic
-Collagen
WhatAisAtheAintegumentaryAsystem?A-AcorrectAanswers-
Skin,Ahair,Anails,AoilAandAsweatAglands
WhatAisAtheAmostAsuperficialAlayerAofAskinAcalled?A-AcorrectAanswers-Epidermis
WhatAisAtheAinnermostAlayerAofAskinAcalled?A-AcorrectAanswers-Hypodermis
WhatAisAtheAmiddleAlayerAofAskinAcalled?A-AcorrectAanswers-dermis