Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
Adaptive immunity generates a specific response to pathogens.
B
Adaptive immunity is the first line of defense against infections.
C
Vaccines work by leveraging the principles of adaptive immunity.
D
Adaptive immunity does not involve memory cells.
E
The adaptive immune response can take days to develop after initial exposure.
Understanding the Answer
Let's break down why this is correct
Answer
Adaptive immunity is the part of the immune system that recognizes specific molecules on invading germs and remembers them for faster future responses. It is carried out mainly by two kinds of cells, B cells that make antibodies and T cells that attack infected cells. Because it remembers past infections, it can respond more quickly and strongly the second time a germ appears. For example, after you get a flu shot, your body learns the virus’s shape and can fight it much faster if you catch the flu again. These features—specificity, memory, and cell‑mediated and antibody‑mediated responses—define adaptive immunity.
Detailed Explanation
Adaptive immunity makes a precise attack on the exact enemy, so it only fights the specific disease it sees. Other options are incorrect because People think the first line of defense is adaptive immunity, but that is actually innate immunity, like the body’s automatic alarm; The idea that adaptive immunity has no memory cells is wrong.
Key Concepts
Adaptive Immunity
Immune Response
Vaccination
Topic
Adaptive Immunity
Difficulty
easy level question
Cognitive Level
understand
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