If two anatomic structures have the same density and atomic number but one is twice as thick as the other, the thicker structure will absorb
a. the same number of x-ray photons.
b. twice as many x-ray photons.
c. four times the number of x-ray photons.
d. eight times the number of x-ray photons.
b. twice as many x-ray photons.
Health Professions
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Elderly patients typically take ________ medications than younger patients do
a. the same b. less c. more d. different
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Restriction endonucleases function by:
a. Linking 2 pieces of DNA from different sources. b. Adding a phosphate group onto one end of the DNA. c. Cutting the DNA at specific nucleotide sequences. d. Breaking the DNA randomly to create fragments of manageable size.
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