)
A. Food, water
B. Kissing, touching
C. Fomites
D. Droplets from sneezing/coughing
E. Air
F. Skin punctures (intentional or unintentional)
B. Kissing, touching
D. Droplets from sneezing/coughing
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The 5' upstreamregions of transcriptionally active genes generally donot exhibit which of the following characteristics?
A. contain binding sites for known regulatory proteins B. relatively fewer nucleosomes C. increased in vitro sensitivity to DNase I D. increased concentration of histone H1
The functional unit of the kidney is called
A. Bowman's capsule. B. a collecting duct. C. a nephron. D. a loop of Henle.
Echinoderms
A. are only found in the ocean. B. have a water vascular system. C. have radial symmetry. D. All of the above are correct.
In the old days, milkmaids were exposed to cowpox from milking the cows, and this fortuitously gave them some protection from smallpox. What was happening in the milkmaids?
A. They were heightening their overall immune response due to exposure to the cowpox and other cow parasites. B. They were effectively receiving a vaccination from a related virus. C. They were receiving a dose of generic IgG from the sick cows. D. They had a stronger immune response from drinking the milk, which sent cow B cells circulating through their blood.