Which of the following adds new nucleotides to a growing DNA chain?
a. DNA polymerase
b. DNA helicase
c. RNA primer
d. primase
e. RNA polymera
A
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Species richness of birds in the continental United States is highest
A. where temperatures are highest. B. in northern California. C. in Florida. D. in Texas. E. in the center.
Which methods will move carbon dioxide into the atmosphere?
a. Aerobic respiration and burning of fossil fuels b. Burning of fossil fuels and sedimentation c. Sedimentation and photosynthesis d. Decomposition and diffusion e. Aerobic respiration and sedimentation
The treatment for pneumonia caused by Pneumocystis jiroveci in AIDS patients is ________.
A. Streptomycin B. combination of trimethoprim and sulfisoxazole C. Amantadine D. Miconazole
Which of the following characteristics applies to biomes?
a. usually confined to a relatively small geographical area b. encompass interacting landscapes c. level of ecological organization preceding (lower than) ecosystem d. boundaries extend beyond climate barriers e. regions with similar climate, but different plants, animals, and soil