The significance of the Hershey and Chase
experiments in which 32P and 35S were used is
that
a. DNA labeled with 35S and proteins labeled
with 32P can be traced in the course of an
experiment.
b. they demonstrated that DNA labeled with
32P is transferred from the bacteriophage to
the virus.
c. they established that proteins labeled with
35S become deactivated and unable to be
transferred.
d. they demonstrated that bacteriophages
transfer their DNA, not their protein coats,
into their hosts.
e. DNA may be the hereditary material;
although, bacteriophages transfer both
DNA and proteins into their hosts
D
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The seed plants consist of which of the following monophyletic groups?
A. ferns B. gymnosperms C. angiosperms D. ferns and horsetails E. angiosperms and gymnosperms
Mitochondrial Eve was
A) fossil evidence of the Biblical Eve. B) a figurative first woman who had a mtDNA sequence that could have given rise, by mutation, to all modern human mtDNA. C) a hominid who had features of both australopithecines and Homo. D) a famous female paleontologist who has studied several fossil hominids in Ethiopia.
The p300/CBP (CREB-binding protein) proteins are histone acetyltransferases that help regulate the transcription of many genes. Based on this information you can conclude that these proteins
A. recruit helicases. B. physically connect activator proteins. C. remodel chromatin. D. acetylate purines.
Which of the following statements about vertebrate eyes is true?
A. Most predators have monocular vision. B. Most predators have eyes on the sides of their heads. C. Binocular vision helps prey animals scan their surroundings for predators. D. Most prey animals have eyes on the sides of their head and monocular vision. E. Monocular vision allows for better depth perception.