,TesttBankt-tEssentialstoftPathophysiologyt(4thtEditiontbytPorth) 2
,TesttBankt-tEssentialstoftPathophysiologyt(4thtEditiontbytPorth) 3
Chaptert 01t -t Cellt Structuret andt Function
1. Thet nucleus ,twhicht ist essentialt fort functiont andt survivalt oftthet cell.
A) istthetsitetoftproteintsynthesis
B) containst thet genetict code
C) transformst cellulart energy
D) initiatest aerobict metabolism
2. Althoughtenergytistnottmadetintmitochondria,ttheytaretknowntastthetpowertplantstoftthetcelltbecausetthe
y:
A) containtRNAt fort proteint synthesis.
B) utilizet glycolysist fort oxidativet energy.
C) extracttenergyt fromt organict compounds.
D) storetcalciumtbondst fort musclet contractions.
3. Althoughtthetbasictstructuretoftthetcelltplasmatmembranetistformedtbytatlipidtbilayer,tmosttoftthetspe
cifictmembranetfunctionstaretcarriedtouttby:
A) boundt andt transmembranet proteins.
B) complex,t longt carbohydratet chains.
C) surfacet antigenst andt hormonet receptors.
D) atgatingt systemt oft selectivet iont channels.
4. Tot effectivelyt relayt signals,t cell-to-cellt communicationt utilizest chemicalt messengert systemst that:
A) displacet surfacet receptort proteins.
B) accumulatet withint cellt gaptjunctions.
C) bindttotcontractilet microfilaments.
, TesttBankt-tEssentialstoftPathophysiologyt(4thtEditiontbytPorth) 4
D) releaset secretionst intot extracellulart fluid.
5. Aerobict metabolism,t alsot knownt ast oxidativet metabolism,t providest energyt by:
A) removingt thet phosphatet bondst fromt ATP.
B) combiningt hydrogent andt oxygent tot formt water.
C) activatingtpyruvatet storedtintthet cytoplasm.
D) breakingt downt glucoset tot formt lactict acid.
6. Exocytosis,t thet reverset oft endocytosis,t ist importantt in intot thetextracellulart fluid.
A) Engulfingt andt ingestingt fluidt andtproteinst fort transport
B) Killing,t degrading,t andt dissolvingt harmfult microorganisms
C) Removingt cellulart debrist andt releasingt synthesizedt substances
D) Destructiontoft particlest byt lysosomalt enzymest fort secretion
7. Thet processt responsiblet fort generatingt andt conductingt membranet potentialst is:
A) diffusiont oft current-carryingt ions.
B) millivoltaget oft electricalt potential.
C) polarizationt oft chargedt particles.
D) iontchanneltneurotransmission.
8. Epithelialttissuestaretclassifiedtaccordingttotthetshapetoftthetcellstandtthetnumbertoftlayers.tWhichtoftthet
followingtistatcorrectlytmatchedtdescriptiontandttypetoftepithelialttissue?
A) Simplet epithelium:t cellst int contactt witht intercellulart matrix;t somet dot nott extendt tot surface
B) Stratifiedtepithelium:t singlet layert oftcells;t alltcellstrestt ontbasementt membrane
C) Glandulart epithelium:t ariset fromt surfacet epitheliat andt underlyingt connectivet tissue
D) Pseudostratifiedt epithelium:t multiplet layerst oft cells;t deepestt layert restst ont basementt membrane