What can best be defined as a contest between two species for limited resources?
a) competition
b) transition
c) predation
d) parasitism
Answer: a) competition
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This organism is often associated with infections in patients with leukemia or lymphoma, as well as preterm infants:
a. S. multivorum b. C. indologenes c. E. meningoseptica d. Bergevella zoohelicum
In addition to the capsid, some viruses also have which of the following?
a. a virion b. a cell wall c. a viral envelope d. a plasma membrane
Which of the following distinguishes a mammal from a reptile?
a. Mammals may have hair whereas reptiles have feathers. b. Mammals suckle their young whereas reptiles do not. c. Mammals emerge from eggs whereas reptiles give live birth. d. Mammals evolved before reptiles. e. Mammals evolved from amphibians whereas reptiles evolved from dinosaurs.
Which of the following statements about the Galápagos finches is false?
A) The Galápagos finch species differ in their feeding habitats. B) Each island in the Galápagos chain has one and only one isolated, unique species of Darwin's finch. C) Most speciation events of the Galápagos finches occurred when some finches made it to another island, evolved in isolation, and accumulated enough changes to become a new species. D) The evolution of the Galápagos finches is an excellent example of adaptive radiation.