Scelta multipla
New flu shots are needed every year to protect against infection because of __________.
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41. Immune System
Adaptive Immunity
Scelta multipla
A vaccine may contain __________.
A
white blood cells that fight infection
B
antibodies that recognize invading microbes
C
a hormone that boosts immunity
D
lymphocyte antigens
E
inactivated disease-causing microbes
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Understand the purpose of a vaccine: Vaccines are designed to stimulate the immune system to recognize and fight specific pathogens without causing the disease itself.
Identify the components typically found in vaccines: Vaccines often contain inactivated or weakened forms of the disease-causing microbes, or parts of the microbes such as proteins or polysaccharides.
Clarify why inactivated microbes are used: Inactivated microbes are used because they cannot cause disease, but they still contain antigens that the immune system can recognize and respond to.
Differentiate between the options given: White blood cells, antibodies, hormones, and lymphocyte antigens are not typically included in vaccines themselves, but are part of the body's immune response to the vaccine.
Conclude with the correct component: The correct answer is that vaccines contain inactivated disease-causing microbes, which help the immune system learn to recognize and fight the real pathogen if encountered in the future.
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