Which of the following nutrients is digested only after it reaches the small intestine?
A) fat
B) protein
C) starch
D) polypeptide
Answer: A
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Which statement best explains why modern seedless vascular plants are confined largely to wet or humid environments?
a. They require external water for reproduction. b. They do not have true roots. c. They lack stomata. d. They have a dominant sporophyte generation. e. They do not have flowers or fruits.
One's equilibrium is sensed by a
a. chemoreceptor. b. mechanoreceptor. c. photoreceptor. d. thermoreceptor. e. osmoreceptor.
Changes that occur at the genetic level in populations are classified as ________
A) chemical evolution B) microevolution C) gradualism D) macroevolution
Evidence suggests that the crocodiles are more closely related to the birds than the turtles and snakes. If so, then including crocodiles, but not birds, in the Class Reptilia would make the Class Reptilia
A. a paraphyletic group. B. parsimonious. C. a polyphyletic group. D. a monophyletic group. E. not homologous.