Which protein transports oxygen in the bloodstream?
A) plasminogen B) thrombin C) hemoglobin D) erythropoietin
Answer: C
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The idea that the adenine and thymine bases of the DNA interact in some manner was first proposed by _______
A. Watson and Crick B. Franklin C. Pauling D. Chargaff
Which of the following is not a primate?
A. Monkeys B. Lemurs C. Apes D. All are primates.
Species richness is greatest at which latitude?
a. 60 degrees north b. 60 degrees south c. 0 degrees d. 40 degrees north e. 20 degrees south
The ranges of black bears and brown bears overlap. However, black bears spend most of their time in the woods and
brown bears spend most of their time along the river. Which of the following best describes why black and brown bears do not interbreed? a. habitat isolation b. temporal isolation c. biological isolation d. evolutionary isolation e. environmental isolation