Even though 90 percent of infections are asymptomatic, why should you always treat amebiasis?
A) The protozoan can cause invasive disease that affects the liver, lungs, and brain.
B) The immune system of the host can quickly become compromised.
C) Exotoxin production can promote a vigorous inflammatory response in certain patients and also damage the cytoskeleton of the colon's epithelial cells.
D) Asymptomatic patients can continue to spread the disease for years before dying themselves.
E) Pseudomembranous plaques form along the colon lining as toxins cause tissue damage in 10 percent of hosts.
Answer: A
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A germ cell is indicated by the letter(s) ____
a. A b. B c. C d. D e. B, C, and D
You wish to study interspecies mating. Which organisms would be the best mating pair to study?
A) a Great Dane and a poodle B) a lion and a tiger C) a green bell pepper plant and a red bell pepper plant D) a striped tiger and an albino tiger
Cylindrical layers of meristem that run lengthwise through shoots and roots, and allow for thickening, are called ____.
A. lateral meristems B. apical meristems C. ground meristem D. procambium E. protoderm