Phytochrome is converted from the inactive to the
active form by being exposed to light of what color?
a. far red
b. red
c. yellow
d. blue
e. none of these
Answer: b
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Endolymph is a fluid found in the:
a. Synovial cavity b. Vitreous chamber of the eye c. Internal ear d. All of these
During ventricular systole, the semilunar valves ________ and the AV valves ________
A) open; open B) close; open C) open; close D) close; close
The long snout of the giant anteater, Myrmecophaga tridactyla, of South America, and the echidna, Tachyglossus aculeatus, of Australia, are animals of different evolutionary lineages that are both adapted to eating ants. This is an example of
A. selective breeding. B. anatomical homology. C. analogous traits. D. artificial selection. E. Both analogous traits and artificial selection are correct.
Due to disruptions in circadian rhythms, when are heart attacks and strokes most likely to occur?
a. 8 am b. 12 pm c. 4 pm d. 10 pm e. 3 am