Which of the following is the name of small intracellular structures surrounded by lipid membranes?
A) alleles
B) microcells
C) organelles
D) none of these
C
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The large group of Scandinavians in Minnesota and the Dakotas in early America are known as a(n) ________.
A. majority B. ethnic island C. culture D. ethnic province
Which of the following statements best describes the natural pyrethrins?
A) They are ester derivatives of chrysanthemic acid. B) They are amide derivatives of permethrin. C) They are ester derivatives of permethrin. D) They are amide derivatives of chrysanthemic acid.
A beaker contains a mixture of ice and pure liquid water at 0oC. What happens to the temperature of the liquid water as heat is added?
-It rises slowly until it reaches 32oC, and then it remains constant as the ice melts. -The temperature pattern cannot be predicted. -It remains constant until the ice melts, and then it begins to rise. -It immediately begins to rise slowly. -It rises rapidly as the ice melts.
Remote sensing is one of today's geographer's numerous tools. Fundamental to remote sensing are
A) aerial photographs and satellite imagery. B) binoculars. C) mental maps. D) computerized library archives. E) Global Positioning Systems.