Most fossils form most often in sedimentary rock
1.True
2.False
1
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Ras is like a G protein because it:
A. triggers the formation of cyclic AMP. B. responds to the activation of G protein-coupled receptors. C. is only active when it binds GTP. D. All of these answer options are correct.
Triploblastic are animals that
A. form three separate blastulas from a single embryo. B. produce three eggs, each of which forms a single blastula. C. form three blastopores in each blastula. D. have a blastula composed of three cells. E. have three germ layers.
The transformation of humans from hunter-gatherer societies to agriculturally based ones occurred approximately
____.
a. 14,000 years ago b. 11,000 years ago c. 7,000 years ago d. 1,500 years ago e. 200 years ago
Bipedalism is most highly developed in
a. hominoids. b. apes. c. humans. d. monkeys. e. prosimians.