An effective vaccine is available to prevent (gonorrhea/salmonellosis/typhoid).
Fill in the blank(s) with the appropriate word(s).
typhoid
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Mice lacking the ability to make caspase-9 die as the result of numerous defects. During the necropsy (animal autopsy) of the animal you note that the brains of these mice are
A) unregulated growth of the nerve cells. B) lack of apoptosis of some cells. C) overstimulation of G-protein-mediated transduction. D) overproduction of the Etr1 receptor protein. E) all of the above
The function of a single fruit fly gene was inactivated completely by mutation. A fruit fly with this mutation did not have legs. Which is a reasonable conclusion to make based on this information?
A) The normal gene function is required for viability in fruit flies. B) The normal gene function is required for leg formation in fruit flies. C) The normal gene is unlikely to regulate other genes involved in leg formation. D) The normal gene is likely required in fruit flies for formation of legs, wings, and antenna.
A type of monocyte that has long, thin processes to trap pathogens is a(n) ________.
A. dendritic cell B. macrophage C. eosinophil D. mast cell E. platelet
A gene that contains introns can be made shorter (but remain functional) for genetic engineering purposes by using _____
A) a restriction enzyme (endonuclease) to cut the gene into shorter pieces B) reverse transcriptase to reconstruct the gene from its mRNA C) DNA polymerase to reconstruct the gene from its polypeptide product D) DNA ligase to put together fragments of the DNA that code for a particular polypeptide