Which of the following is an example of direct damage due to bacterial infection?
A) the uncontrolled muscle contractions in Clostridium tetani infection
B) the invasion and lysis of intestinal cells by E. coli
C) the hemolysis of red blood cells in a staphylococcal infection
D) the fever, nausea, and low blood pressure in a Salmonella infection
E) the excessive secretion of fluids in a Vibrio cholera infection
B
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What muscular disorder is characterized by a progressive weakening of the muscle cells due to a faulty gene on the X chromosome?
a. Polio b. Tetanus c. Muscular dystrophy d. Amyotrophic lateral sclerosis e. Botulism
Puffballs and bracket fungi are most closely related to:
a. molds. b. truffles. c. the common edible mushroom. d. yeast. e. the black bread mold.
In Figure 47-1, dentin is labeled as number:
a. 1
b. 2
c. 3
d. 4
e. 5
Which of the following is a parasitic worm that lives in the human rectum and moves out to the anus to lay eggs resulting in severe itching?
a) pinworms b) flukes c) Trichinella spiralis d) filarial worms e) tapeworms