Question

79

A viral infection will trigger ________, which is important to destroy ________.

Select one:

A. humoral immunity only; intracellular viral pools

B. cell mediated immunity only; viruses in any location.

C. humoral and cell mediated immunity; intracellular and extracellular viral pools.

D. cell mediated immunity only; intracellular viral pools

Answer 1

C:humoral and cell mediated immunity; intracellular and extracellular viral pools.Virus infection in humans results in two general types of immune response. The first is a rapid-onset "innate" response against the virus, which involves the synthesis of proteins called interferons and the stimulation of "natural killer" lymphocytes. In some cases, the innate response may be enough to prevent a large scale infection. However, if the infection proceeds beyond the first few rounds of viral replication, the "adaptive immune response", kicks into high gear. The adaptive immune response itself has two components, the humoral response (the synthesis of virus-specific antibodies by B lymphocytes) and the cell-mediated response (the synthesis of specific cytotoxic T lymphocytes that kill infected cells). Both of these components of the adaptive immune response result also in the production of long-lived "memory cells" that allow for a much more rapid response (i.e., immunity) to a subsequent infection with the same virus.