The ____ a photon’s wavelength, the ____ its energy
a. shorter; greater
b. longer; greater
c. shorter; less
d. longer; more variable
e. shorter; more variable
ANSWER: a
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Cystic fibrosis affects the lungs, the pancreas, the digestive system, and other organs, resulting in symptoms ranging from breathing difficulties to recurrent infections. Which of the following terms best describes this?
A) incomplete dominance B) multiple alleles C) pleiotropy D) epistasis E) codominance
A number of species have declined in abundance around Boston, Massachusetts, since Thoreau's time. These tend to be:
A. the plants least able to change their flowering time. B. the plants that have changed their flowering time the most. C. the plants that have the earliest flowering time. D. the plants that have the latest flowering time. E. None of the above.
Clown fishes form symbiotic relationships with members of this group of cnidarians:
a. siphonophores. b. hydrozoans. c. anthozoans. d. scyphozoans. e. bryozoans.
The prevalence of a particular disease refers to:
A) the frequency with which the disease occurs. B) how acutely the disease negatively affects a person. C) the number of cases in a particular population over time. D) the number of deaths from the disease in a given population.