A whale that floated when harpooned was called a(n) ____
a. orca
b. right whale
c. blue whale
d. fin whale
e. sperm whale
B
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Lipopolysaccharide is comprised of three moieties (lipid A, core oligosaccharide, and O-antigen), which require ________ biosynthetic pathway(s).
A. six B. one C. two D. three
ADH controls how diluted or concentrated urine is by controlling the:
A. permeability of the collecting ducts to water. B. permeability of the collecting ducts to electrolytes. C. permeability of the collecting ducts to urea. D. permeability of the loops of Henle to water. E. permeability of the loops of Henle to electrolytes.
Honey bees use movement in specific patterns (waggle) that convey information about the location of a food source. Which of the following does not accurately describe the waggle dance?
A. The waggle is "danced" by the queen bee. B. Foragers waggle back and forth while moving forward. Then they circle back, repeat the waggle and circle back the other way. C. Distance to the food source is conveyed by a waggle up the middle of the bee's circle. D. If the food source is far away, the bee spends more time waggling up the middle of its circle. E. Finding the food source that is at a 45 degree angle requires that the dancer's "line" be 45? to the left of vertical.
The fusion of a sperm cell with two polar nuclei in the ovule forms the:a
cotyledon. b. endosperm. c. fertilized egg. d. zygote. e. embryo.