Which of the following is NOT true of human
papillomaviruses?
a. they causes warts
b. some kinds cause cervical neoplasms
c. they cause interference with tumor
suppressors
d. they interfere with proteins that promote
mitosis
e. all of these are TRUE of human
papillomaviruses
D
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A mutation that readily reverses to restore the original parental type would most likely be due to a(n)
A) deletion. B) insertion. C) point mutation. D) frameshift mutation.
Cytological examination of resting and contracted muscle provides important support for the sliding filaments model for how skeletal muscle contracts. This evidence includes the observation that during contraction the
A) Z lines move farther apart. B) lengths of the thick filaments shorten significantly. C) lengths of the thin filaments shorten significantly. D) I bands get longer. E) H zone becomes narrower.
Choose the most appropriate statement that matches each term.
A. B. C. bacteria D. E. archaea F. composite heritage G. H. I.
You are presented with an animal that resembles a jellyfish. As you examine it further, which characteristic would allow you to conclude that it belongs to the Phylum Ctenophora rather than the Phylum Cnidaria?
A. tentacles. B. gonads. C. stinging cells. D. complete digestive tract.