Which of the following leads to all the others?
A) subcutaneous hemorrhaging
B) presence of antirickettsial antibodies
C) blockage of capillaries
D) bacterial growth in endothelial cells
E) breakage of capillaries
D
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When the Catabolite Activator Protein binds to its binding site in DNA, it
A. bends the DNA. B. eliminates the need for a sigma factor on the part of RNA polymerase. C. promotes the assembly of other transcription factors at the promoter. D. displaces repressors.
A chromosome that results when the centromere splits in the wrong plane during meiosis, forming identical arms, is a(n)
A) ring chromosome. B) metachromosome. C) parachromosome. D) isochromosome.
Observing a patient who has been given an experimental drug, you notice that it constricts blood vessels and slows digestion, making its effects similar to those of
A. calcitonin. B. epinephrine. C. insulin. D. glucagon. E. testosterone.
Which of the following is TRUE about the accuracy of DNA replication?
A) Many errors are made during DNA replication, but this does not matter because repair enzymes mend the errors. B) DNA polymerase always makes a perfect copy of the original DNA. C) DNA polymerase makes very few errors, so no repair enzymes are needed. D) Many errors are made during DNA replication, but this does not matter because of the immense size of the DNA molecule. E) The few errors made by DNA polymerase are usually corrected by repair enzymes.