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After contact with the polio virus a child developed polio and recovered - VCE - SSCE Biology - Question 14 - 2006 - Paper 1
Question 14
After contact with the polio virus a child developed polio and recovered. Twelve months later the child came in contact with the polio virus again but did not show a... show full transcript
Worked Solution & Example Answer:After contact with the polio virus a child developed polio and recovered - VCE - SSCE Biology - Question 14 - 2006 - Paper 1
Step 1
B. grew B memory cells specific to polio.
Answer
The child did not show any symptoms upon re-exposure to the polio virus because they had developed B memory cells that are specifically tailored to recognize and combat the polio virus. These memory cells are part of the adaptive immune system and enable the immune response to quickly and effectively deal with pathogens that the body has previously encountered. Thus, the presence of these memory cells prevents the recurrence of the disease.