Which gas is increasing the most in the atmosphere, thereby intensifying the greenhouse effect?
a. carbon dioxide
b. carbon monoxide
c. ozone
d. nitrogen
e. oxygen
ANSWER: a
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The increased rate of O2 uptake by activated phagocytes is called the
A) hypoxemia. B) pyogenesis. C) respiratory burst. D) peroxidase.
Would antibodies produced by a patient in response to infection be monoclonal, or polyclonal?
monoclonal. B. Since a single pathogen has multiple antigens, and each antigen has multiple epitopes, the responding antibodies to a whole pathogen would be polyclonal. C. Since the pathogen would most likely mutate slightly during the infection (producing different epitopes), the responding antibodies would be polyclonal. D. Since the pathogen would acquire and modify self-antigens during the infectious process, the antibodies produced during the response would be polyclonal.
What are the cells produced by mitotic divisions considered to be?
a. genetically different b. two thirds genetically identical c. half genetically identical d. genetically identical
An X-ray revealed that Josh's lungs were filled with fluid. What is the proper diagnosis of Josh's illness?
A. pneumonia B. pulmonary fibrosis C. asthma D. bronchitis E. emphysema