2. the diagram below represents an event that occurs in the blood. which statement describes this…

2. the diagram below represents an event that occurs in the blood. which statement describes this event?\n(1) cell a is a white blood cell releasing antigens to destroy bacteria.\n(2) cell a is a cancer cell produced by the immune system and it is helping to prevent disease.\n(3) cell a is a white blood cell engulfing disease - causing organisms.\n(4) cell a is protecting bacteria so they can reproduce without being destroyed by the predators.

2. the diagram below represents an event that occurs in the blood. which statement describes this event?\n(1) cell a is a white blood cell releasing antigens to destroy bacteria.\n(2) cell a is a cancer cell produced by the immune system and it is helping to prevent disease.\n(3) cell a is a white blood cell engulfing disease - causing organisms.\n(4) cell a is protecting bacteria so they can reproduce without being destroyed by the predators.

Answer

Brief Explanations:

  • White blood cells (phagocytes) are known for engulfing (phagocytosing) disease - causing organisms (pathogens) like bacteria.
  • Option (1) is incorrect because white blood cells release antibodies (not antigens) to fight bacteria. Antigens are on the surface of pathogens.
  • Option (2) is wrong as cancer cells are not produced by the immune system to prevent disease. The immune system usually attacks cancer cells.
  • Option (4) is incorrect as white blood cells do not protect bacteria. Their role is to destroy pathogens.

Answer:

(3) Cell A is a white blood cell engulfing disease - causing organisms.