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Study questions with answers - Topic 4 2014.pdf

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Department
Biology
Course
BIO1140
Professor
Doug Johnson
Semester
Winter

Description
Studyquestionanswers2014Topic4ThecytoskeletonMultiplechoicequestions1markperanswer1 Thethickfilamentsofskeletalmusclecellsarecomposedoftheproteina Keratinb Actinc Kinesind Myosine Titin2 Whatpropertiesofintermediatefilamentmonomersdistinguishthemfromthemonomersthatmakeupmicrofilamentsormicrotubulesa Therearenumerousdifferenttypesinanindividualcelltypeb Theyareprimarilyfibrousratherthanglobularproteinsc Theydonotbindandhydrolyzenucleotidesd Bothbandcaretruee Allofabandcaretrue3 Microtubulesarenotastructuralcomponentofa Ciliab Flagellac Microvillid Mitoticspindlee Microtubulesareastructuralcomponentofallofabcandd4 Kinesinsanddyneinsa Movealongbothmicrotubulesandmicrofilamentsb Generallymoveinoppositedirectionstoeachotherc DerivetheirenergyfromGTPhydrolysisd Haveglobularheadsthatcontainactinbindingsitese Allofabcanddaretrueofkinesinsanddyneinscytoskeletalelements5 Whichofthefollowingstatementsisnottrueofthea Intermediatefilamentsandmicrofilamentsbutnotmicrotubulesstrengthencelltocellconnectionsb Microtubulesandmicrofilamentsbutnotintermediatefilamentsallowfortheintracellulartransportofmoleculeswithinthecytoplasmc Intermediatefilamentsandmicrotubulesbutnotmicrofilamentsfunctioninorganizingorganelleswithinthecytoplasmd Cellularmotilitycanbedrivenbymicrotubulesandmicrofilamentsbutnotintermediatefilaments
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