Which disease did Stanley Prusiner first identify as being caused by prions?
a. Kuru
b. Mad cow disease
c. Fatal familial insomnia
d. Scrapie
Ans: d. Scrapie
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A particular strain of yeast produces strains with a mutant cdc2 gene, resulting in little to no production of the Cdc2 protein kinase. As a result, one would expect that these cells would
A) not enter M phase. B) not have the nuclear envelope disperse. C) lack chromosome condensation. D) all of the above E) none of the above
Microfilaments are assembled from the protein ____
a. keratin b. myosin c. laminin d. actin e. tubulin
If a restriction endonuclease cuts a circular DNA three times, how many fragments should there be
after the DNA is subjected to electrophoresis through an agarose gel?
a. 1 b. 2 c. 3 d. 4 e. 5
A pigment that absorbs red and blue light and reflects green light is
A) xanthophyll. B) phycocyanin. C) chlorophyll. D) carotenoid. E) melanin.