OBJECTIVE LIFE SCIENCE
SIGNALLING IMMUNOLOGY CANCER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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when the body is exposed to a foreign substance and the immune system overreacts and harms the body
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proteins that can attach to foreign cells, labeling them for destruction
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hemorrhage from the spleen
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None of the above
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Detailed explanation-1: -When a harmless substance such as dust, mold, or pollen is encountered by a person who is allergic to that substance, the immune system may over react by producing antibodies that “attack” the allergen. The can cause wheezing, itching, runny nose, watery or itchy eyes, and other symptoms.
Detailed explanation-2: -An allergic reaction is an overactive or misdirected immune response to a foreign substance that does not cause a response in most people. An immune response involves activation of white blood cells in order to protect the body from foreign substances, such as viruses and bacteria.
Detailed explanation-3: -Allergies are an overreaction of the body’s natural defense system that helps fight infections (immune system). The immune system normally protects the body from viruses and bacteria by producing antibodies to fight them.