Viruses that persist in the cell and cause recurrent disease are considered?
A) oncogenic
B) cytopathic
C) latent
D) resistant
Ans: C) latent
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The spiracle in conjunction with a ventral gill in skates and rays is an adaptation that allows them to:
a. be nekton. b. have a bottom existence. c. position their mouth ventrally. d. avoid detection by predators. e. filter feed on plankton.
Which vector would be best to use if you want to construct a genomic library with the largest fragments possible?
A) YAC B) BAC C) Plasmid D) Virus
To introduce dsRNA into C. elegans, it is enough just to dip the worms into media that includes E. coli containing the dsRNA because __________
A) E. coli infect C. elegans and then the RNA is released B) E. coli break up into pieces due to the presence of the worms C) C. elegans feed on the transgenic bacteria D) C. elegans emit toxins that paralyze the bacteria E) E. coli emit chemicals that cause pores to open in the nematode body wall
The muscles of a recently deceased human can remain in a contracted state, termed rigor mortis, for several hours, due to the lack of _____
A) ATP needed to break actin-myosin bonds B) calcium ions needed to bind to troponin C) oxygen supplies needed for myoglobin D) sodium ions needed to fire action potentials