The function of the nucleolus is
A) to manufacture polypeptides.
B) to manufacture ribosomal RNA.
C) intracellular digestion.
D) to store chromatin.
Answer: B
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Cryptic coloration means
a. males and females look different. b. blending with the background. c. camouflage. d. standing out against a background. e. blending with the background and camouflage
Describe the difference between cohesion and adhesion, and how they combine to allow water to move
upward in plants.
What will be an ideal response?Four of the following contribute to acid rain. Which one is the exception?
a. ozone b. burning of coal c. nitrogen fertilizers d. burning of gasoline e. motor vehicles
The hormone ADH
A) causes the kidneys to produce dilute urine. B) is secreted by the kidneys. C) causes the cells of the collecting duct to be more permeable to water. D) causes the kidneys to produce a high volume of urine. E) is usually secreted when the body is completely hydrated.