How does the blister rust impact the Yellowstone ecosystem?
a. It reduces the availability of whitebark berries.
b. It reduces the numbers of grizzly bears.
c. It reduces the numbers of gray wolves.
d. all of these
D
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Which of the following is true of DNA?
A. The nucleotides in one strand are connected by hydrogen bonds. B. A phosphate group in a nucleotide is attached to the 3 carbon in ribose. C. A purine always forms a complementary base pair with a pyrimidine. D. The percentage of the purine A always equals the percentage of the purine G. E. It is used by ribosomes for translation.
Ca+ ion channels are found:
A. only at the axon terminal membrane. B. only along the terminal ends of the dendrites. C. throughout the length of the axon. D. throughout the entire neuron. E. only at the axon hillcock.
Tall (D) is dominant to dwarf (d). Give the F2 genotypic and phenotypic ratios of a cross between a
pure-breeding, tall plant and a pure-breeding, dwarf plant. What will be an ideal response?
Which of the following is not true of bacterial conjunctivitis?
A. It can be transmitted through both direct and indirect contact. B. Infection produces a clear discharge from the eye. C. Treatment is with a broad-spectrum topical antibiotic. D. It can be caused by S. pyogenes or S. pneumoniae.