Which of the following are adaptations of fluid feeders that feed on the blood of other
animals?
a. piercing and sucking mouthparts
b. production of anesthetic compounds
c. production of anticoagulants
d. all of these
D
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Elucidation of the histone code might
A. allow us to turn specific genes on or off. B. allow the determination of nucleosome composition. C. lead to chromatin remodeling. D. allow us to control translation.
A frog loses its ability to undergo buccal pumping. What must happen to compensate for this loss?
A. The pumping of blood from the atria to the ventricle must increase. B. The exchange of gases through the skin must increase. C. The pumping of blood from the ventricle to the body must increase. D. The diffusion of wastes through the kidneys must increase. E. The pumping of blood from the ventricle to the atria must increase.
____ will inhibit the ability of pathogens to infect other cells.
What will be an ideal response?
The degree of mental retardation in a Down syndrome fetus is predictable. Indicate whether the statement is true or false