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Cytoskeleton

QuestionAnswer
-filamentous polymers of actin -~7nm diameter -flexible Microfilaments
-filamentous protein of tubulin - ~25nm -more rigid than microfilaments - form spindle during cell division Microtubules
-various protein subunits -~10mn diametre - stable length:less dynamic -provides strength and support Intermediate Filaments
Uses ATP hydrolysis to step along microtubules or microfilaments Motor Proteins
Travels along microfilaments: cell movement and contraction Myosin
Travels toward negative end of microtubules: vesicle / organelle transport / beating of flagella / cilia Dynein
Travels toward positive end of microtubules: vesicle / organelle transport Kinesin
Structure and support, intra cellular transport, spatial organisation, cellular motility Cytoskeleton
Dynamic Polymers of ∂ tubulin and ß tubulin heterodimers Microtubules
Created by: Reneedb
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