The fourteen species of finch native to the Galapagos Islands
a. were victims of a mass extinction there
b. evolved from a single common ancestor
c. migrated in waves from South America
d. evolved after a mass extinction of birds that previously lived in the islands
e. were victims of a mass extinction there
B
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Which method often results in colonies developing down throughout the agar along with some colonies on the surface?
A. Streak plate B. Spread plate C. Replica plate D. Pour plate
In examining water samples preserved in glass jars over the last century, you notice a steadily declining pH. What is the most likely general explanation?
A. gradual eutrophication of water sources B. rising atmospheric carbon dioxide levels leading to gradual acidification C. dumping of acids in waterways D. mislabeling of samples E. None of the answer choices is correct.
What is the primary function of mitochondria?
a. lipid synthesis b. material storage c. protein synthesis d. transformation of energy e. capturing light for photosynthesis
In the three-domain system, the eukaryotes are represented
A) only within the domain Eukarya. B) only within the domain Archaea. C) only within the kingdom Protista. D) in all three domains.