BIO 2600 EXAM 3 QUESTIONS WITH COMPLETE ANSWERS

where are actin found


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not isolated, throughout cytoplasm, concentrated in the cell cortex,
generally found in networks bound to other proteins




true or false
if a protein cannot bind to anything it will be added to a different microtubule


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false, it will be disassembled

,true or false
intermediate filaments have only z-filaments


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false, they only have N-terminals




lamellipodia


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flat, sheet like extensions with dense meshwork of actin




in dynamic instability plus ends can be stabilized by


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capping proteins

, alpha-tubulin and beta-tubulin are held together with which bond
a) covalent bond
b) noncovalent bond
c) hydrogen bond
c) peptide bond


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b) noncovalent bond




microtubules are destabilized by the GTP cap


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false, stabilized




Which cytoskeletal filament system is the strongest


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intermediate filament




dynesin


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