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Exam 17: Immunity and Infection

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Question 51

Multiple Choice

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Hepatitis B is transmitted mainly by

A) casual contact.
B) contaminated food.
C) organ donation.
D) sexual contact.

E) All of the above
F) A) and B)

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Question 52

Multiple Choice

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Lymphocytes generated during an initial infection that circulate in the body for years and quickly respond to that infection if it ever appears again are called _______________ cells.

A) killer T and B
B) helper T and B
C) suppressor T and B
D) memory T and B

E) C) and D)
F) B) and C)

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Question 53

Multiple Choice

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Vessels,organs,and structures that pick up excess fluids,then filter out and destroy foreign cells and debris,belong to the _______________ system.

West Nile virus and hantavirus infections primarily involve transmission by vectors rather than person-to-person spread.

Immunization is based on the

Key components of a typical asthma attack include all of the following EXCEPT

Discuss the concept of emerging infectious diseases.Identify at least three specific emerging infections and three factors contributing to disease emergence worldwide.

Greg has suffered from several severe colds and one other virus during the course of the past year.He wants to improve the functioning of his immune system so that he gets sick less often and so that the symptoms are less severe when he does.Describe at least five practical steps Greg could take to boost the strength of his immune system over the long term.

Mutation of bacterial strains is a factor in the development of antibiotic-resistant bacteria.

Antibodies have complementary surface markers that bind to _______________ on foreign microbes.

Which of the following is NOT a vector of disease?

Antibacterial soap has been proven to reduce the risk of infection better than regular soap.

Influenza usually causes all of the following symptoms EXCEPT

Lymphocytes that stimulate other lymphocytes to increase in number are called _______________ cells.

The use of over-the-counter antihistamines is a form of immunotherapy.

To avoid this illness,Andrew should have

The two main types of lymphocytes are T cells and B cells.

Define pathogen and trace the chain of infection through its various steps.Give at least three strategies for breaking the chain of infection.

The most effective way of preventing the flu in the winter is by protecting your body from cold temperatures.

Cell-mediated immune response