Learning Path
Question & Answer
Choose the Best Answer
poison
cytokine
antibody
antigen
Understanding the Answer
Let's break down why this is correct
Natural killer cells release a toxic molecule that can enter infected or tumor cells and cause them to die. Other options are incorrect because Cytokines are signals that tell other immune cells what to do; Antibodies are made by B cells and stick to foreign particles.
Key Concepts
Innate Immune Responses
easy level question
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Deep Dive: Innate Immune Responses
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Definition
Innate immune responses involve natural killer cells targeting infections and tumors, inflammation causing hot, swollen areas to fight irritants, and fever as a systemic response to pathogens. Fever creates an inhospitable environment for pathogens to slow their growth. Asymptomatic infections, where pathogens multiply without causing symptoms, highlight the body's silent defense mechanisms.
Topic Definition
Innate immune responses involve natural killer cells targeting infections and tumors, inflammation causing hot, swollen areas to fight irritants, and fever as a systemic response to pathogens. Fever creates an inhospitable environment for pathogens to slow their growth. Asymptomatic infections, where pathogens multiply without causing symptoms, highlight the body's silent defense mechanisms.
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