Which is NOT true regarding retroviruses?
a. Reverse transcriptase creates dsDNA from the ssRNA genome.
b. Integrase inserts the viral dsDNA into the host cell’s genome as a provirus.
c. Protease excises the provirus from the host cell genome.
d. New nucleocapsids exit the cell by budding.
Answer: C
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A tidal pattern of two equal high and low tides per day is called a:
a. mixed semidiurnal tide. b. semidiurnal tide. c. diurnal tide. d. spring tide. e. neap tide.
In the experiments of Griffith, the conversion of nonlethal R-strain bacteria to lethal S-strain bacteria:a
was due to genetic mutation. b. was due to transformation. c. proved that proteins are the genetic material. d. could not be reproduced by other researchers. e. was similar to experiments performed by Watson and Crick.
Which genetic condition is revealed in the karyotype display?
a. cri-du-chat b. triple-X syndrome c. Turner syndrome d. Down syndrome
What is the name of the protein that appears to regulate the entry of cells into an S phase? This protein is also known as the "guardian of the genome."
A) cyclin B) p53 C) phosphokinase D) p34 E) p102