Which of the following would describe the action of a chemical compound considered to be a mutagen?
A. Most are reactive and add bulky side
groups to DNA bases.
B. Most are able to bypass DNA repair
mechanisms.
C. Most are reactive and add bulky side
groups to RNA bases.
D. Most interfere with DNA replication.
E. Most interfere with DNA transcription.
A
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Which of the following phrases INCORRECTLY completes the following statement? The Hox complexes of vertebrates
A. encode the same genes as those found in the Antennedepia and bithorax complexes. B. follow the colinearity rule. C. are arranged in groups of four complexes in all organisms that possess them. D. determine the anteroposterior axis. E. suggest there is a basic body plan that is followed by all multicellular organisms.
Most tunicate adults are
a. herbivores. b. photoautotrophs. c. carnivores. d. scavengers. e. filter feeders
Put the three events of aerobic cell respiration in order:
What will be an ideal response?
A pigment absorbs a photon if the energy of the photon is ____.
A. exactly enough to boost an electron of the pigment to a higher energy level B. slightly more than the energy of the electron absorbing the photon C. significantly more than the energy of the electron absorbing the photon D. exactly twice the energy of the electron absorbing the photon E. significantly less than the energy of the electron absorbing the photon