In which organ does the smooth ER inactivate drugs and harmful metabolic byproducts?
a. brain
b. kidney
c. liver
d. heart
e. spleen
ANSWER: c
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Bacterial and eukaryotic cells primarily control gene expression at the level of transcription. If instead cells exerted control of gene expression primarily at the post-translational level, what would be different?
A) The ability to rapidly respond to environmental change would be reduced. B) Cells would expend significantly more energy. C) Genes would no longer be transcribed. D) Translation of mRNA into protein would not occur.
Approximately _____ percent of human births in the U.S. are the result of in vitro fertilization
a. 0.5 b. 1.5 c. 5 d. 10 e. 25
Why is malaria such an effective disease? What will be an ideal response?
Endocrine function typically involves
A. coordinated activity of several hormones. B. single hormones responding to nervous stimulation. C. hormones being used in the immediate vicinity of their place of production. D. gland cells being transported to where they are needed.