Endospores survive a variety of harsh conditions in part because of the presence of
A) mycolic acid.
B) lipopolysaccharide.
C) hopanoids.
D) dipicolinic acid.
E) glycoproteins.
D
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Which of the fungi listed below will stay localized to the skin surface and will not invade and spread?
A. Candida spp. B. Sporothrix schenckii C. Blastomyces dermatitidis D. Trichophyton spp.
In a form of early-onset Alzheimer disease caused by a mutation on chromosome 14, A is changed to T at the first position of codon 146, which substitutes leucine for methionine. This mutation is a ________ and is ________.
A) transversion; nonsense B) transversion; missense C) transition; missense D) transition; nonsense
©McGraw-Hill EducationThe common ancestor shared by mouse and gorilla is at point ________ on the phylogeny shown.
A. A B. B C. C D. D E. E
Figure 8.3
Answer the following questions about Griffith's experiments involving Streptococcus pneumoniae.
If an injection to the mouse contains live S strain Streptococcus pneumonia, ____.
A. the mouse will develop fatal pneumonia. B. live R strain will be detected in the mouse's blood C. the mouse will remain healthy. D. no live S strain will be detected in the mouse's blood E. the live S strain bacteria will lose their pathogenicity