__________ secrete hormones into blood. Fill in the blank(s) with the appropriate word(s)
Answer: Endocrine glands
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We refer to water as a solvent. Why do oil and water not mix then?
a. Oil cannot break the surface tension of water. b. Oil forms hydration shells around the water molecules. c. Water can only dissolve polar molecules and ionic compounds. Oils (lipids) are nonpolar. d. Water can only dissolve nonpolar compounds. Oils (lipids) are polar.
Species such as mice have a better chance of surviving sudden environmental change than elephants because
A. elephants reproduce much more slowly than mice. B. elephants require larger habitats than mice. C. elephants eat more than mice. D. elephants live longer than mice. E. elephants have a more selective diet than mice.
When bacteria appear in tissues, a type of large cell engulfs and destroys them. Which process are these cells using to engulf the bacteria?
A) exocytosis B) active transport C) pinocytosis D) phagocytosis
In the successional sere on abandoned fields in the Piedmont of North Carolina, self-inhibition is a common mechanism determining the course of community development. In which of the following species is self-inhibition caused by growth inhibitors produced by decaying roots?
A) horseweed B) aster C) pine D) all of the above