Which of the following is/are able to survive phagocytosis?
A. Brucella sp.
B. Staphylococcus aureus
C. Francisella tularensis
D.
Brucella sp AND Francisella tularensis
D.
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During which era did the dinoflagellates, coccolithophorids, and diatoms appear?
A. Paleozoic Era B. Mesozoic Era C. Cenozoic Era D. Neoproterozoic Era E. Paleoproterozoic Era
Specific targeting of an antigen is a
characteristic of which line of defense?
a. first b. second c. third d. all of these e. none of these
We can detect the SNP in the ?S allele because it destroys a DdeI restriction site, leading to DNA restriction fragment variation revealed by Southern blot analysis
Either two or three restriction sequences for the restriction endonuclease DdeI can occur near the ?-globin gene, depending on the allele. One DdeI restriction sequence is eliminated from the ?S allele by the SNP in the mutant allele because of a mutation in the double-stranded target sequence 5? - CTNAG - 3?. Suppose the wild-type allele sequence is CCTGAG, while a newly identified SNP is CCTTAG. Would this same restriction fragment analysis technique be appropriate for detecting this particular SNP? What other technique(s) could you use to identify this particular mutation?
The blastocyst begins to form a second hollow cavity that will eventually become the
A) placenta. B) fundus. C) amniotic cavity. D) embryonic disk. E) embryo.