Natural selection has fueled the rise in MRSA (methicillin-resistant Staphylococcus aureus) infection by
A) enabling people to use a greater variety of antibiotic drugs to fight the infection.
B) inactivating a greater variety of antibiotic drugs.
C) enabling certain bacterial variants to survive in the presence of many antibiotic drugs.
D) killing all bacteria exposed to antibiotics, including helpful ones.
C) enabling certain bacterial variants to survive in the presence of many antibiotic drugs.
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Characteristic inclusion bodies formed in cells of organisms infected with rabies are called
A. Negri bodies. B. metachromatic bodies. C. polyphasic bodies. D. Koplik spots.
A gene is a DNA sequence that codes for a
protein or
a. RNA. b. DNA. c. ribosomes. d. a lipid. e. more than one of these.
What technique allows an investigation of the microheterogeneity of a membrane so that one can see localized differences in different parts of the membrane?
a) circular dichroism b) tasty-freeze replication c) freeze-fracture replication d) X-ray crystallography e) freeze-denture replication
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Figure 36.18
Use the figure above to answer the following question.
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The anatomical structure identified with the letter "C" in the accompanying figure illustrates ____.
A. sickle-cell anemia B. leukemia C. atherosclerotic plaque D. bone cancer E. polycythemia