The final stage of Chagas' disease is typically fatal because the parasite infects cells of the (blood/heart/liver)
What will be an ideal response?
heart
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Refer to the figure above (first three rows of the periodic table). What element has properties most similar tocarbon?
A) boron B) silicon C) nitrogen D) aluminum E) phosphorus
The original published articles describing the structure of DNA were authored by _____ and _____
a. Crick; Franklin b. Watson and Crick; Franklin c. Wilkins; Franklin d. Wilkins; Watson and Crick e. Watson; Crick
In an experimental situation, a student researcher inserts an mRNA molecule into a eukaryotic cell after he has removed its 5' cap and poly-A tail. Which of the following would you expect him to find?
A. The molecule is digested by restriction enzymes in the nucleus. B. The molecule is digested by exonucleases since it is no longer protected at the 5' end. C. The molecule attaches to a ribosome and is translated, but more slowly. D. The cell recognizes the absence of the tail and polyadenylates the mRNA. E. The mRNA could not exit the nucleus to be transcribed.
During inflammation, which of the following releases histamine?
a) eosinophil b) mast cells c) plasma cells d) B cells