Why is bird flu (H5N1) considered an emerging disease whereas HIV is not?
A. Bird flu (H5N1) is bacterial whereas HIV is viral.
B. Bird flu (H5N1) has only been recognized in the past 20 years.
C. Bird flu (H5N1) has not infected as many people as HIV.
D. Bird flu (H5N1) has infected more people than HIV.
E. Bird flu (H5N1) is more deadly than HIV.
Answer: B
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In addition to cystic fibrosis patients, patients with which other disease are at greatest risk of death due to fulminant lung infections and/or bacteremia caused by B. cepacia?
a. Cardiovascular disease b. Chronic kidney disease c. Chronic obstructive pulmonary disease d. Chronic granulomatous disease
All of the following are true regarding transgenic animals EXCEPT
A. the process has created mice that have a phenotype similar to that of a person with cystic fibrosis. B. foreign genes are micro-injected into eggs, fertilized in vitro, and the zygotes are placed in host females to develop. C. the product desired by the transgenic procedure may be secreted in the milk of female offspring. D. the process has been used to develop organisms that are partially animal and partially plant.
Pathogenic bacteria are becoming increasingly deadly as
Select one: a. humans refuse to wash their hands frequently enough. b. antibiotic resistance builds when more and more humans take unnecessary antibiotics. c. they pick up genes from humans, allowing them to fool human body cells into thinking that they are harmless. d. humans lose their natural immunity to many pathogens through lack of exposure. e. there are an increasing number of side effects from antibiotics.v
Mechanical digestion begins in the _____________.
a. Stomach b. Oral cavity c. Esophagus d. Intestines