Darwin's observations of finches from the Galápagos included which of the following?
a. The 13 finch species were descended from a common ancestor.
b. The 13 finch species each had differently-shaped bills.
c. The 13 finch species had migrated from South America.
d. The 13 finch species had different food preferences
e. The 13 finch species had similar DNA sequences
D
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The redness and induration found after a tuberculin skin test involve the action of
A. sensitized T cells. B. IgE. C. complement. D. basophil cells.
Which of the following processes occurs in the cytoplasm of a eukaryotic cell?
a. translation b. DNA replication and transcription c. transcription d. DNA replication e. translation and transcription
Skeletal muscle can operate anaerobically for short periods, producing ________ and a small amount of ATP
a. lactate b. pyruvate c. creatine d. phosphate
Which of the following best explains the decline in amphibian species?
a. the loss of both aquatic and terrestrial habitats b. overexploitation in the fishing industry c. sharp fluctuations in global temperatures d. introduction of predatory species