The layers of connective tissue that protect the brain are the
a. meninges.
b. epithelial segments.
c. palisade layers.
d. xylem.
e. cambium layers.
A
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Staphylococcus aureus is a common cause of food poisoning in the United States.
Answer the following statement true (T) or false (F)
Which of the following are products of nonstructural genes, and are therefore never translated?
A. transfer RNA B. ribosomal RNA C. messenger RNA D. transfer RNA and ribosomal RNA E. ribosomal RNA and messenger RNA
All of the following are actin-dependent nonmuscle motility except
A) translocation of multienzyme complexes. B) pinching off of the cleavage furrow in cytokinesis. C) chemotaxis. D) cyclosis or cytoplasmic streaming. E) amoeboid movement.
Jenner's work with vaccinations depended on which of the following?
a. Trusting that the body produced agents that effectively overcame a disease-causing microbe b. Exposing patients to the exact pathogen he was trying to protect them from c. Selecting a microbe that could easily evade the immune system d. Selecting a pathogen that was a bacterium