Question

how do natural killer cells contribute to immunity?
they directly attack and kill infected cells
they activate b cells
they produce antibodies
they engulf pathogens through phagocytosis
question 12 (1 point)
the process by which phagocytes engulf and destroy pathogens is known as:
antibody production
phagocytosis
chemotaxis
opsonization

Explanation:

• Natural killer cells are part of the immune system. Their main function is to directly attack and kill infected or abnormal cells.
• Phagocytosis is the process where phagocytes (like macrophages) engulf and destroy pathogens.

Answer:

• For the first question: They directly attack and kill infected cells.
• For the second question: Phagocytosis.