Which of the following are examples of adaptations that do not result from living at high altitudes?
a. elevated erythrocyte count
b. increased number of alveoli
c. increased number of lung capillaries
d. hemoglobin molecules with greater affinity for O2
e. decreased erythrocyte count
E
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Which of the following criteria have to be met for a species to qualify as invasive?
A) endemic to the area, spreads rapidly, and displaces foreign species B) introduced to a new area, spreads rapidly, and displaces native species C) introduced to a new area, spreads rapidly, and displaces other invasive species D) endemic to the area, spreads slowly, and displaces native species
The echiuran Urechis is also known as:
a. the peanut worm. b. the lugworm. c. the innkeeper worm. d. the beardworm. e. the fan worm.
The ability of actin filaments to disassemble into small monomers:
a. Enables the building blocks of actin filaments to move from one side of the cell to the other b. Is not relevant to actin filaments c. Is relevant to treadmilling d. Two of the above e. None of the above
Pouches in the gut wall developed into ____ in
fishes that are ancestral to land vertebrates. a. heart chambers b. the notochord c. lobes of the liver d. lungs e. vocal cords