Antigens And Phagocytosis

Question 1

What are antigens?

Answer 1

• An antigen is a protein/glycoprotein
• that stimulates an immune response/the production of a specific antibody

Question 2

What are phagocytes?

Answer 2

white blood cells (including macrophages) that destroy pathogens by engulfing
them

Question 3

Phagocytosis model answer

Answer 3

• Phagocyte recognizes antigen
• Pathogen is engulfed into a phagosome
• Lysosome fuses with phagosome forming a phagolysosome
• Lysozyme enzymes hydrolyse pathogen
• Antigens from pathogen may be presented on the surface of the cell