Which of the following is(are) characteristic of
acute inflammation?
a. warmth
b. swelling
c. redness
d. pain
e. all of these
E
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Consider the model for the equilibrium number of species in a mainland (continental) region, as illustrated in Figure 20.23. What does this model say about the rate of speciation?
A) The rate of speciation decreases as a linear function of the number of species. B) The rate of speciation increases as a linear function of the number of species. C) The rate of speciation increases as a function of the number of species, but the rate of increase decelerates as the number of species becomes large.
"Any difference among individuals that is sufficiently common such that it would almost certainly be present in a group of 50 individuals chosen at random" is the definition of a(n):
A. allele. B. genotype. C. polymorphism. D. restriction site. E. phenotype.
The respiratory surface of an earthworm is located in the _____
a. lungs b. gills c. skin d. gastrovascular cavities e. trachea
______________ is a negative emotional state generally associated with a blocked goal.
A. Frustration B. A hassle C. Stress D. Conflict