What three actions do white blood cells perform to respond to pathogens?

What three actions do white blood cells perform to respond to pathogens?

• A. Phagocytosis
• B. Release anti-toxins, release antibodies and phagocytosis
• C. Release toxins
• D. Trap pathogens

Answer: (B)

White blood cells defend by a three-pronged approach: they can engulf and digest invaders (phagocytosis), they can produce antibodies that recognize pathogens and help disable or mark them for attack, and they can generate antitoxins that neutralize toxins some pathogens release. This combination covers the full response: physically removing the pathogen, tagging or neutralizing it, and protecting tissues from toxin damage. The option that includes phagocytosis plus releasing antibodies and antitoxins fits all three of these protective actions, making it the best choice. Releasing toxins would harm the body, and trapping pathogens alone doesn’t describe the active methods WBCs use to counter infection.

White blood cells defend by a three-pronged approach: they can engulf and digest invaders (phagocytosis), they can produce antibodies that recognize pathogens and help disable or mark them for attack, and they can generate antitoxins that neutralize toxins some pathogens release. This combination covers the full response: physically removing the pathogen, tagging or neutralizing it, and protecting tissues from toxin damage. The option that includes phagocytosis plus releasing antibodies and antitoxins fits all three of these protective actions, making it the best choice. Releasing toxins would harm the body, and trapping pathogens alone doesn’t describe the active methods WBCs use to counter infection.