The pathogenesis of Rocky Mountain spotted fever involves:
A. systemic release of cytokines, leading to toxic shock.
B. endothelial cell damage, leading to increased vascular permeability.
C. release of potent exotoxins that destroy vascular endothelium.
D. invasion of the organism into the cardiac muscle.
Answer: B. endothelial cell damage, leading to increased vascular permeability.
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Members of the ____ phylum have bilaterally symmetrical larvae, but exhibit secondary radial symmetry as adults,
usually organized around five rays, or "arms."
a. Hemichordata b. Echinodermata c. Cnidaria d. Arthropoda e. Chordata
The trunk of the body has muscles of all of the
following EXCEPT a. thorax. b. limbs. c. backbone. d. pelvic cavity. e. abdominal wall.
Topic 2.3 - Human-Associated Microbes
What will be an ideal response?
During elongation in translation, to which ribosomal site does an incoming charged tRNA molecule bind?
A) A site B) P site C) E site D) B site