The major agents responsible for the common cold are
A. Influenza viruses.
B. Rotavirus.
C. Rhinoviruses.
D. Coxsackie viruses.
E. Caliciviruses.
Answer: C
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Rodents have been associated with numerous severe epidemics in the past, prompting microbiologist Hans Zinsser in the 1930s to write a book, Rats, Lice, and History, in which he documented the important role of rodents in epidemics
Discuss why rodent control is still desirable, even in an age when it is perceived that the "magic bullets" of chemotherapy and immunization to control infectious disease are readily available. What will be an ideal response?
What percent of implanted clone embryos
survive to be born alive? a. 2. b. 5. c. 10. d. 25. e. 50.
Why is it important for DNA to be copied before cell division?
a. Genetic information must be transmitted to the daughter cells. b. The daughter cells must be polyploid. c. The nucleus does not contain enough room for extra DNA. d. The daughter cells need extra copies of the genetic information present in the parent cell. e. The daughter cells do not need proteins.
Hepatitis B virus releases a large amount of viral antigen, which benefits the patient by
A. producing a stronger cellular immune response. B. activating antibody mediated immunity. C. making it easier to develop a vaccine. D. allowing for better treatment. E. ensuring plentiful substrate for binding with labeled antibodies in diagnostic tests.