7. Which of the following is NOT true about active vaccines? A. They stimulate t

Question

7. Which of the following is NOT true about active vaccines?

A. They stimulate the humoral immune response

B. They are useful for immediate relief from infection or intoxication

C. Vaccines can be toxins or infectious microbes.

D. Vaccines result in the anamenestic response

8. The measles-mumps-rubella vaccine uses an attenuated virus. This is an example of what type of vaccine?

A. Natural, passive

B. Artificial, passive

C. Natural, active

D. Artificial, active

9. Functions of antibodies include which of the following:

A. They bind to and inactivate toxins

B. They destroy cells infected by viruses

C. A given antibody can recognize many different epitopes

D. They are produced by cytotoxic killer T cells

Please provide explanations.

Explanation / Answer

7. B is not correct. vaccines cannot be useful for immediate relief from infection or intoxication. The vaccines will stimulate the humoral immune response. They prevent the infection by evoking immune response.

8. D. Artificial, active.

The measles-mumps-rubella vaccine uses an attenuated virus which stimulate immune response, which is given afrtificially.

9. A. They bind to and inactivate toxins

The antibodies are synthesizes by exclusively B cells and antibody can recognize many specific epitopes of particular antigen. They do not destroy cells infected with viruses.

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