Which of the following has the highest half life?
a) MIT
b) DIT
c) T3
d) rT3
e) T4
Ans: e) T4
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In Lives and Opinions of the Eminent Philosophers, Diogenes recounts how Plato’s Academy amended his definition of a human—“a featherless biped” to include “with broad, flat nails”—after Diogenes brought him a plucked chicken. Clearly, none of these philosophers were being entirely serious, but this exchange highlights a difficulty with phylogenies based entirely upon phenotypes. Which of these definitions would have prevented Diogenes from presenting another animal to Plato and declaring it a man?
a. “a hairy biped with stereoscopic vision” b. “a featherless biped with fingers and a nose” c. “a biped with an upright posture and fully opposable thumbs” d. “a biped that talks and uses tools”
The interaction of sympathetic and parasympathetic
systems is best described as a. antagonistic. b. cooperative. c. overriding. d. synergistic. e. ineffective.
Some of the drugs used in chemotherapy work by
A. inhibiting cytokinesis. B. producing kinases. C. preventing spindle formation. D. increasing telomeres. E. causing cells to divide quickly.
What do echinoderms and chordates have in common?
A. Protostome development B. Endoskeletons C. Ecdysis D. Dorsal nerve cords