01-31-2006, 01:59 AM
a clone of cancer cells is resistant to vincristine ,doxorubicin and dactinomycin..but not to methotrexate and various alkylating agents .the mech of resistance is by which of the foll mechs??
a)absent superoxide dismutase
b)absent dna polymerase
c)enhanced drug transport out of the cell
d)inability to form poly glutamates
e)increased dnase
2)which if the foll components directly stimulates the relase of ca2+?
a)camp
b)diacylglycerol
c)g protein
d)inositol tri po4
e)nitic oxide
f)protein kinase
a)absent superoxide dismutase
b)absent dna polymerase
c)enhanced drug transport out of the cell
d)inability to form poly glutamates
e)increased dnase
2)which if the foll components directly stimulates the relase of ca2+?
a)camp
b)diacylglycerol
c)g protein
d)inositol tri po4
e)nitic oxide
f)protein kinase