A patient is bitten by a dog with confirmed rabies infection. After treating the bite wound, the physician injects the patient with antibodies that are specific for the rabies virus to prevent the development of an active infection. This is an example of:
A) Natural active immunity
B) Artificial active immunity
C) Natural passive immunity
D) Artificial passive immunity
Ans: D) Artificial passive immunity
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Capillary walls consist of ____
a. stratified squamous epithelium b. simple squamous epithelium c. simple cuboidal epithelium d. stratified cuboidal epithelium e. simple columnar epithelium
Reservoirs include ________.
A. animals B. soil C. water D. humans E. All of the choices are correct.
Which of the following statements about asexual reproduction is NOT true?
A. A large number of offspring can be produced in this way in a short time. B. Asexual reproduction occurs with only one parent. C. Asexual reproduction is less commonly used by vertebrates. D. Asexual reproduction can occur by budding or by division and regeneration. E. Asexual reproduction produces variation that allows the species to adapt quickly to changing environmental conditions.
True or False: There are safe and effective HIV-2 vaccines available, but because HIV-1 has such high genetic variability, the vaccines are of little use to prevent AIDS
a. TRUE b. FALSE