What type of immunity is acquired after recovering from an infection?
a) Passive immunity
b) Active immunity
c) Innate immunity
d) Artificial immunity Answer: b) Active immunity
Which cells are primarily involved in the body’s immune response?
a) Red blood cells
b) White blood cells
c) Platelets
d) Neurons Answer: b) White blood cells
Which type of immunity is provided to an infant through breast milk?
a) Active immunity
b) Passive immunity
c) Innate immunity
d) Artificial immunity Answer: b) Passive immunity
Which of the following is an example of artificial immunity?
a) Recovery from a cold
b) Antibodies passed from mother to baby
c) Vaccination
d) Skin acting as a barrier Answer: c) Vaccination
What is the main role of antibodies in the immune system?
a) Transporting oxygen
b) Fighting infections
c) Digesting food
d) Clotting blood Answer: b) Fighting infections
Which part of the immune system is responsible for producing antibodies?
a) T cells
b) B cells
c) Red blood cells
d) Platelets Answer: b) B cells
Which type of immunity is present from birth and provides general protection against pathogens?
a) Adaptive immunity
b) Acquired immunity
c) Innate immunity
d) Artificial immunity Answer: c) Innate immunity
What is an autoimmune disease?
a) A condition where the immune system attacks its own body
b) A disease caused by external pathogens
c) A temporary weakening of the immune system
d) A disease caused by a lack of immune response Answer: a) A condition where the immune system attacks its own body
Which of the following cells are responsible for the “memory” in the immune system?
a) Memory B cells
b) Platelets
c) Erythrocytes
d) Macrophages Answer: a) Memory B cells
Which organ is primarily responsible for filtering pathogens from the blood?
a) Liver
b) Spleen
c) Kidney
d) Pancreas Answer: b) Spleen
