Which of the following is the single most important stage when regulating gene expression?
a. translational regulation
b. degradation of mRNA
c. initiation of transcription
d. RNA interference
e. removal of masking segments
C
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What evidence was used to determine that the
last universal common ancestor of all life lived about 4.3 million years ago?
a. fossils of prokaryotic cells b. genome comparisons between all living things c. life found in meteorites d. fossil cladistic analysis e. more than one of these
The major problem associated with Luft's Syndrome is
a. insufficient ATP production. b. slow metabolism. c. too few mitochondria. d. excessive ATP production. e. low cellular oxygen consumption
As temperatures increase during seasonal fluctuations in marine environments,
A) both species richness and species dominance increase. B) species richness increases and species dominance decreases. C) species richness decreases and species dominance increases. D) both species richness and species dominance decrease.
Marine cone snails, Conus magus, are the source of ________
A) calcitonin used to treat osteoporosis B) growth hormone used to treat dwarfism C) hydroxyapatite used to treat arthritis D) cells for the LAL test used to detect bacterial contamination of surgical tools E) Prialt, a peptide used as a pain reliever