Immune System, Part 2

What is the primary function of the adaptive immune system?

• To provide immediate defense against pathogens

• To remember and attack specific pathogens it has encountered before

• To neutralize toxins in the body's fluids

• To produce white blood cells

How do B lymphocytes recognize pathogens?

• By the shape of the pathogen

• By temperature changes in the body

• By using membrane-bound antibodies to identify antigens

• Through chemical signals in the blood

What role do antibodies play in the immune response?

• They repair damaged tissues

• They mark pathogens for destruction by other immune cells

• They directly kill pathogens

• They increase body temperature to kill pathogens

What is the main purpose of vaccinations?

• To prime the immune system against future infections

• To provide temporary immunity

• To introduce live pathogens into the body

• To weaken the immune system

How does passive humoral immunity differ from active humoral immunity?

• Passive immunity requires vaccinations while active does not

• Passive immunity involves memory cells while active does not

• Passive immunity is permanent while active is temporary

• Passive immunity is acquired through antibodies from another source, while active is developed after exposure to antigens