Which blood vessels have thin, leaky walls?
A) capillaries
B) venules
C) arteries
D) none of the above
A
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A common mechanism in fungal diseases is
A) endotoxin production. B) intracellular invasion. C) hypersensitivity reactions. D) red blood cell lysis.
Which of the following statements is true regarding Wolbachia bacteria?
A. Wolbachia co-evolved with insects. B. Wolbachia can selectively kill male insect embryos. C. Wolbachia can convey Dengue-resistance in insects. D. Wolbachia can affect the reproductive structures of its insect hosts. E. All of these statements about Wolbachia are true.
Which of the following is NOT true of hydrogen bonds?
a. They are quite weak. b. The hydrogen is slightly positive. c. They are uncommon in macromolecules. d. They form in salts such as NaCl. e. They always involve hydrogen.
Plasma cells
A. suppress immune reactions. B. function in allergic reactions. C. directly destroy target cells. D. activate B-cells and other T-cells. E. secrete antibodies.