An approach in which scientists make observations about the natural world, develop tentative
explanations about what they observe, and then test those explanations by collecting more information
is referred to as ____.
a. science
b. education
c. the scientific method
d. the method
e. the biological method
C C
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These organisms, which all live together, would be considered a(n) __________
a. organism b. population c. community d. ecosystem
Which of the following indicators of global
warming has (have) occurred? a. increase in the temperature of the lower atmosphere b. rise in sea level c. global surface temperatures are increasing at a faster rate d. melting of glaciers e. all of these
An ideal antimicrobial therapeutic drug exhibits all of the following characteristics, except
A. they are nontoxic to host. B. they are easily administered. C. they have limited capacity to elicit resistance. D. they are nonallergenic. E. they are easily broken down by host.
Mutations of the gene for ?-globin
a. are usually lethal. b. occur only at amino acid position 6. c. number in the hundreds. d. always result in sickling of red blood cells. e. can always be detected by gel electrophoresis.