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Which of the following helps prevent the entry of pathogens into humans? (A) Cilia (B) Antigens (C) B lymphocytes (D) Inflammation response - HSC - SSCE Biology - Question 2 - 2004 - Paper 1
Question 2
Which of the following helps prevent the entry of pathogens into humans? (A) Cilia (B) Antigens (C) B lymphocytes (D) Inflammation response
Worked Solution & Example Answer:Which of the following helps prevent the entry of pathogens into humans? (A) Cilia (B) Antigens (C) B lymphocytes (D) Inflammation response - HSC - SSCE Biology - Question 2 - 2004 - Paper 1
Step 1
Select the correct option
Answer
The correct answer is (A) Cilia. Cilia are hair-like structures that line the respiratory tract and help trap and expel pathogens through their beating motion, thus preventing their entry into the human body. Other options listed do not play a direct role in preventing entry.