The muscles of the anterior leg compartment work synergistically to __________ the foot.
a. invert
b. rotate
c. dorsiflex
d. plantar flex
Ans: c. dorsiflex
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In temperate-zone lakes, a __________ and a fall overturn cause vertical mixing of waters and trigger
a burst of productivity. Fill in the blank(s) with the appropriate word(s).
Glucagon is produced by the
a. adrenal cortex. b. adrenal medulla. c. thyroid. d. kidneys. e. pancreas
Since hormones are present in such small amounts, how can their signals be amplified enough to
regulate so many physiological processes? What will be an ideal response?
Which of the following is a function of a signal peptide?
A. to bind RNA polymerase to DNA and initiate transcription B. to signal the initiation of transcription C. to terminate translation of the messenger RNA D. to translocate polypeptides across the ER membrane E. to direct an mRNA molecule into the cisternal space of the ER