Shingles, or herpes zoster, is caused by the virus that also causes
A. cold sores.
B. chickenpox.
C. smallpox.
D. molluscum contagiosum.
E. warts.
Answer: B
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Positive cooperativity would most likely be observed when a protein is:
A. a single polypeptide with a Kd = 10-10. B. a single polypeptide with three ligand-binding sites of increasing Kd values. C. comprised of two identical subunits, each of which binds ligand. D. comprised of two ligand-binding sites where the Kd for the second site decreases after the first ligand binds. E. comprised of subunits A and B, where ligand binding to A facilitates ligand binding to B.
When copies of a gene are found at different locations on the same or different chromosomes, the phenomenon is
called _____.
a. dispersed duplication b. dispersed localization c. duplicate localization d. gene dispersion e. random dispersion
What is the function of heat shock proteins in the cell?
a. prevent the cytoplasm from boiling in hot weather b. protect the plasma membrane from dissolving c. correct folding errors in proteins within the cell d. reset cell metabolism after cold weather hibernation
The large, ancient land mass that contained all the continents is known as ____.
A. Laurasia B. Pangea C. Gondwana D. Atlantis E. Europa