Amoeba sisters immune

What is the primary function of the immune system?

• To protect the body from pathogens

• To produce antibodies

• To create memory cells

• To activate B cells

Which of the following is part of the first line of defense in the immune system?

• Skin

• Macrophages

• Cytotoxic T cells

• Helper T cells

What happens when mast cells release histamine during the second line of defense?

• Blood vessels dilate and become leakier

• Pathogens are engulfed by B cells

• Antibodies are produced

• Memory cells are activated

What is the role of cytotoxic T cells in the third line of defense?

• Destroy infected cells

• Produce antibodies

• Engulf pathogens

• Activate Helper T cells

What is the function of memory cells in the immune system?

• Store memory of antigens

• Produce histamine

• Engulf pathogens

• Activate macrophages

How do vaccines help the immune system?

• By introducing weakened or inactivated pathogens

• By directly destroying pathogens

• By producing antibodies

• By activating macrophages

Which type of immune response involves B cells producing antibodies?

• Humoral response

• Cell-mediated response

• Inflammatory response

• Non-specific response