Which of the following is a source of new alleles
within a population?
a. genetic recombination
b. meiosis
c. mutation
d. genetic drift
e. natural selection
Answer: c
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In the metabolism of a fatty acid to obtain energy, one of the first steps is that the fatty acid is broken down to
A. acetyl. B. glycerol. C. glyceraldehyde-3-phosphate. D. a keto acid.
All etiologic agents are pathogens.
a. true b. false
How is an immunofiltration assay different from an ELISA?
A) Test antigens are bound to filters rather than plastic plates. B) Positive results are the result of precipitate formation. C) Fluorescent molecules are attached to antigen rather than enzyme. D) Antibodies are bound to filters rather than plastic plates. E) They take longer than ELISAs.
If the source patient's blood tests positive for HIV:
A) the exposed individual will receive a one-time injection of immune globulin and will be tested for HIV in 2 weeks. B) the blood will be assessed for viral load and the exposed individual may be offered a 4-week trial of antiretroviral therapy. C) the most rapid method for determining if the exposed individual was infected is by assessing his or her lymphocyte count. D) federal law requires that the exposed individual be placed on antiretroviral therapy and not be allowed to work in a health care setting.