Multiple Choice
In the context of cell signaling and the immune response, what is the primary role of memory cells?
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10. Cell Signaling
Introduction to Cell Signaling
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What is the primary function of memory cells in the immune system?
A
To recognize and respond more rapidly to pathogens that the body has previously encountered
B
To produce antibodies during the initial exposure to an antigen
C
To transport oxygen throughout the body
D
To directly destroy infected host cells
Verified step by step guidance1
Understand the role of memory cells in the immune system: Memory cells are specialized lymphocytes (B cells and T cells) that are formed after an initial exposure to a pathogen. Their primary function is to 'remember' the specific antigen associated with the pathogen.
Recall the concept of adaptive immunity: Memory cells are part of the adaptive immune system, which provides a faster and more efficient response upon subsequent exposures to the same pathogen.
Eliminate incorrect options: Memory cells do not transport oxygen (this is the role of red blood cells) or directly destroy infected host cells (this is the role of cytotoxic T cells). They also do not produce antibodies during the initial exposure; this is the role of plasma cells derived from B cells.
Focus on the correct function: Memory cells enable the immune system to recognize and respond more rapidly to pathogens that the body has previously encountered. This is due to their ability to quickly activate upon re-exposure to the same antigen.
Conclude the reasoning: The correct answer is the option that describes the ability of memory cells to recognize and respond more rapidly to previously encountered pathogens, which is a hallmark of immunological memory.
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