Question

multiple choice question
when reexposed to the same pathogen, the body reacts so quickly that there is no noticeable illness. which characteristic of immunity is is this?

• memory
• adaptability
• specificity
• plasticity

Explanation:

To solve this, we analyze each option:

• Memory: The immune system's memory allows a faster, stronger response upon re - exposure to a pathogen, preventing noticeable illness.
• Adaptability: Refers to adjusting to new environments/stressors, not specific to re - exposure to pathogens.
• Specificity: Means the immune system targets specific pathogens, but doesn't directly relate to the speed of re - response.
• Plasticity: Related to the ability to change structure/function in development, not immune re - response.

So the correct option is the one related to the immune system's ability to remember and respond quickly to a previously encountered pathogen.

Answer:

A. Memory