What was the dominant life form of the Mesozoic era?
a. fish
b. reptiles
c. mammals
d. amphibians
e. vascular plants
b
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What products would be expected to form during anoxic degradation of the seven-carbon compound benzoate following reduction and cleavage of the aromatic ring?
A) 1 three-carbon compound and 1 four-carbon compound B) 1 three-carbon compound and 2 two-carbon compounds C) 2 three-carbon compounds and CO2 D) 3 two-carbon compounds and CO2
What would happen if you add mitosis-promoting factor (MPF) to germinal cells in the skin arrested in G2?
a. Cell division would cease. b. The cells would enter prophase. c. The cells would undergo cytokinesis. d. Cell death would occur.
How does the nerve cord of chordates differ from the nerve cord of animals in other taxonomic groups?
A) It is surrounded by bone. B) It develops from the gill slits. C) It does not develop until after the embryonic period. D) It does not extend into the tail. E) It runs along the dorsal side of the body.
The evolution of bilateral symmetry was a necessary precursor for the evolution of _______.
a. tissues b. segmentation c. a body cavity d. cephalization