The Class Reptilia is a group of species that share a common ancestor, but does not include all of that
ancestor's descendants. It is therefore considered to be
a. monophyletic.
b. polyphyletic.
c. paraphyletic.
d. an outgroup.
e. a mosaic.
C
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The neutral subatomic particle is
a. the neutron. b. the proton. c. the electron. d. both the electron and the proton. e. both the neutron and the electron
Adding acetyl groups makes genes accessible
to transcription by a. increasing the pH of the cell. b. making histones loosen their grip on the DNA molecule. c. modifying the nucleotides of the promoter region of the DNA molecule. d. enhancing the activity of RNA polymerase. e. enhancing the development of a DNA-RNA hybrid
Describe the alteration of five selected biomes by humans. How have different biomes been converted
for commercial or agricultural use? Of those selected, which has undergone the most extensive change? What will be an ideal response?
One would predict that bacteria that lack the enzyme photolyase would be more sensitive to what kind of mutagen?
A) intercalating agents B) alkylating agents C) reactive oxygen species D) UV light E) base analog