BIOL 123-CHAPTER 10 EXAM QUESTIONS WITH ANSWERS.

Biol 123-Chapter 10 Exam Questions n n n n




With Answers n n




Tissue v- v vcorrect vanswer- vA vgroup vof vsimilar vcells vthat vperform vthe vsame
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vfunction.
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Organ v- v vcorrect vanswer- vA vcollection vof vtissues vthat vcarry vout va vspecialized
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vfunction vof vthe vbody
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Cytoskeleton v- v vcorrect vanswer- vA vnetwork vof vfibers vthat vholds vthe vcell vtogether,
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vhelps vthe vcell vto vkeep vits vshape, vand vaids vin vmovement
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Cell vjunction v- v vcorrect vanswer- vstructure vthat vconnects va vcell vto vanother vcell vor
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vto vextracellular vmatrix
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Extracellular vmatrix v- v vcorrect vanswer- vThe vsubstance vin vwhich vanimal vtissue
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vcells vare vembedded, vconsisting vof vprotein vand vpolysaccharides.
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Epidermis v- v vcorrect vanswer- vOuter vlayer vof vskin n n n n n n n n




Dermis v- v vcorrect vanswer- vInner vlayer vof vskin
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Basal vlamina v- v vcorrect vanswer- vthin vextracellular vlayer vthat vlies vunderneath
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vepithelial vcells vand vseparates vthem vfrom vother vtissues
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What vare vthe vfour vbasic vtissue vtypes vin vanimals? v- v vcorrect vanswer- vEpithelial,
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vconnective, vmuscle, vand vnerve vtissue.
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How vdoes vthe vstructure vof vthe vepidermis vof vthe vskin vrelate vto vits vfunction? v- v
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vcorrect vanswer- vThe vepidermis vof vthe vskin vprovides va vprotective vbarrier, vand vit
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vhas vmany vfeatures vthat vhelp vit vperform vthis vfunction. vIt vis vseveral vcell vlayers
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, vthick. vThe vindividual vcells, vcalled vkeratinocytes, vare vconnected vby vcell vjunctions.
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vThese vcell vjunctions vconnect vto van vinternal vscaffolding vcalled vthecytoskeleton.
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vFinally, vthe vepidermis vis vattached vto van vunderlying vbasal vlamina, vwhich vis va
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vtype vof vextracellular vmatrix, vgiving vit vadditional vsupport vand vstrength vto vthe
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vcytoskeleton
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Microfilament v- v vcorrect vanswer- va vfiber vfound vinside veukaryotic vcells vthat vis n n n n n n n n n n n n




vcomposed vmainly vof vthe vprotein vactin vand vthat vhas va vrole vin vcell vstructure vand
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vmovement
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Microtubule v- v vcorrect vanswer- vstraight, vhollow vtube vof vproteins vthat vgives
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vrigidity, vshape, vand vorganization vto va vcell
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Intermediate vfilament v- v vcorrect vanswer- vcytoskeletal vcomponent, vcomprised vof n n n n n n n n n




vseveral vfibrous vprotein vintertwined vstrands, vthat vbears vtension, vsupports vcell-cell
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vjunctions, vand vanchors vcells vto vextracellular vstructures
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Actin v- v vcorrect vanswer- vA vglobular vprotein vthat vlinks vinto vchains, vtwo vof vwhich
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vtwist vhelically vabout veach vother, vforming vmicrofilaments vin vmuscle vand vother
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vcontractile velements vin vcells.
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Tubulin v- v vcorrect vanswer- vglobular vprotein vsubunit vforming vthe vhollow vcylinder vof
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vmicrotubules
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Centrosome v- v vcorrect vanswer- vA vstructure vpresent vin vthe vcytoplasm vof vanimal
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vcells vthat vfunctions vas va vmicrotubule-organizing vcenter vand vis vimportant vduring
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vcell vdivision. vA vcentrosome vhas vtwo vcentrioles.
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Dynamic vinstability v- v vcorrect vanswer- vA vproperty vof vactin vfilaments vin vthe
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vcytoskeleton, vcharacterized vby vrapid vshortening vor vlengthening vof vindividual
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vfilaments.
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Motor vprotein v- v vcorrect vanswer- vProtein vsuch vas vmyosin vor vkinesin vthat vuses
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venergy vderived vfrom vATP vhydrolysis vto vpropel vitself valong va vprotein vfilament vor
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vpolymeric vmolecule.
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Myosin v- v vcorrect vanswer- vA vprotein vpresent vin vmuscle vfibers vthat vaids vin
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vcontraction vand vmakes vup vthe vmajority vof vmuscle vfiber
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Kinesin v- v vcorrect vanswer- vA vclass vof vmotor vproteins vthat vuses vthe vchemical
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venergy vof vATP vto v"walk" vtoward vthe vplus vend vof va vmicrotubule. vUsed vto
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vtransport vvesicles, vparticles, vorganelles vand vchromosomes.
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Dynein v- v vcorrect vanswer- vA vlarge vcontractile vprotein vforming vthe vside-arms vof
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vmicrotubule vdoublets vin vcilia vand vflagella.
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Cilia v(singular, vcilium) v- v vcorrect vanswer- vshort, vhairlike vprojections, vsimilar vto
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vflagella, vthat vallow vsome vcells vto vmove
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