Immune System Quiz

What is a characteristic of adaptive immunity not shared by innate immunity?

• Nonspecific protection

• Quick detection and elimination of pathogens

• Specificity and memory

• Presenting antigens to adaptive immune cells

What type of immunity is provided by vaccination?

• Innate immunity

• Passive immunity

• Active immunity

• Cellular defences

What is NOT a method of acquiring adaptive immunity?

• Natural infection

• Vaccination

• Artificial immunity

• Physical barriers

Which of the following cells is NOT part of the innate immune response?

• Mast cells

• Neutrophils

• Macrophages

• B lymphocytes

What is the primary function of macrophages in the innate immune response?

• To produce antibodies

• To release histamine

• To engulf pathogens and release cytokines

• To make blood vessels dilate

Which cells differentiate into macrophages?

• Neutrophils

• Erythrocytes

• Monocytes

• Lymphocytes

Tags

NGSS.HS-LS1-4

What effect do cytokines and histamines have on blood vessels during inflammation?

• They cause blood vessels to constrict

• They increase blood vessel permeability and dilation

• They prevent blood vessels from leaking

• They make blood vessels "stickier" and prevent dilation

What is the role of phagocytes in the innate immune response?

• They produce antibodies to neutralize pathogens.

• They detect pathogens and migrate to the site of infection to engulf and destroy them.

• They release cytokines to stimulate the immune response.

• They recognize cells lacking MHC class I molecules and eliminate them.

Which statement best describes the action of natural killer (NK) cells?

• NK cells recognize and kill healthy cells presenting MHC I molecules.

• NK cells trigger a response that kills infected cells not presenting MHC I molecules.

• NK cells release antibodies to mark infected cells for destruction.

• NK cells engulf and digest pathogens directly.

Where are MHC-I molecules found?

• On the surface of all nucleated cells in the body

• Only on the surface of antigen-presenting cells

• Exclusively on red blood cells

• Inside the nucleus of all cells