Musuq
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Actively dividing fibroblasts in culture are transferred from a 37 C incubator to a 0 C ice bath, and 10-6 M colchicine is added to the culture medium. After 30 minutes, many cells have been arrested in mitosis. Which of the following cytoskeletal proteins is most likely to be involved?<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
A) Actin
B) Desmin
C) Dynein
D) Keratin
E) Kinesin
F) Lamins
G) Myosin
H) Neurofilament proteins
I ) Tubulin
Edited by Musuq on 07/19/06 - 11:26 PM
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| robin082006
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| muzammil
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i tubulin
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| suv
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| Musuq
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why?
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| study_ing
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the clue is 'arrested in mitosis'..u have to chose a protein which stops spindle formation and tubulin is involved..others are mainly cytoskeleton proteins in general (lamin wud be the other choice)
the mechanism of colcichine involves tubuli
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| Musuq
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thanks 
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