Question

1. label: antibodies, pathogens, antigens, and white blood cells.

in your own words, describe what is happening in each section of the diagram above

Explanation:

• First Section: Pathogens (disease - causing agents) are present. White blood cells (immune cells) are also there. Antigens (molecules on pathogens that trigger an immune response) are on the pathogens.
• Second Section: Antibodies (produced by immune cells, like B - cells) bind to the antigens on the pathogens. This marks the pathogens.
• Third Section: The white blood cells (e.g., phagocytes) engulf and destroy the pathogen - antibody complexes.

Answer:

• First section: Pathogens with antigens and white blood cells are present.
• Second section: Antibodies bind to antigens on pathogens.
• Third section: White blood cells engulf and destroy pathogen - antibody complexes.