An example of artificial passive immunity would be
A. a fetus acquiring maternal IgG to the chickenpox virus across the placenta.
B. giving a person immune serum globulins to chickenpox virus after exposure to the disease.
C. chickenpox vaccine triggers extended immunity to chickenpox.
D. chickenpox infection is followed by lifelong immunity.
Answer: B
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a. True b. False Indicate whether the statement is true or false
Which of the following sequences indicates the promoter region of a gene?
A. CAAT D. ACAT B. UAAG E. TAAC C. CTTT
Recruited leukocytes that have invaded the vessel wall are directed to the pathogen by the process of
A) chemotaxis. B) diapedesis. C) migration. D) attachment. E) opsonization.
The Oxidase Test is used to determine which of the following characteristics of a bacterium?
A. Whether the bacterium is a gram-positive or a gram negative B. Whether the bacterium is a sacchrolytic or asacchrolytic C. If the bacterium is an obligate aerobe or a facultative anaerobe D. Whether the bacterium utilized the oxidative or fermentative pathway in glycolysis E. none of the above