The most acute allergic response is anaphylactic shock, which can be deadly due to the histamine-induced
A) increase in capillary permeability.
B) increase in peripheral resistance that decreases cardiac output.
C) decrease in peripheral resistance that decreases mean arterial pressure.
D) decrease in peripheral resistance that increases cardiac output.
E) local decrease in resistance with little effect on mean arterial pressure.
Ans: C) decrease in peripheral resistance that decreases mean arterial pressure.
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Complications of measles may include pneumonia and encephalitis
Indicate whether this statement is TRUE or FALSE.
If the gene pools of allopatric populations did not differentiate much during geographical separation, then upon
reestablishing contact, the populations may interbreed and merge into one. This phenomenon is called ____.
a. species clustering b. divergence c. hybridization d. species fusion
e. convergenceWhich of the following are common infections of the fetus or neonate that are included int he unified cluster known by the acronym TORCH?
a. Herpes b. Rheumatic fever c. Toxoplasmosis d. Other diseases (syphilis, coxsackievirus, varicella-zoster virus, AIDS, and chlamydia) e. Rubella f. Cytomegalovirus g. Conjunctivitis
During the hybridization/annealing phase of a PCR reaction, the primers bind to the target DNA sequence at a specific temperature. What effect would an increase in the GC content of the primer have on the optimal temperature for annealing the primer to a
target DNA sequence? A) the annealing temperature would remain the same B) the annealing temperature would decrease C) the annealing temperature would increase