Immune System

What is an antigen?

• A type of white blood cell that fights infections.

• A substance that triggers an immune response, often found on the surface of pathogens.

• A vaccine that prevents diseases.

• A chemical that causes allergic reactions.

What is the function of T-cells in the immune system?

• T-cells help to produce antibodies that neutralize pathogens.

• T-cells are responsible for the production of red blood cells.

• T-cells play a central role in cell-mediated immunity, helping to destroy infected cells.

• T-cells are involved in the clotting process of blood.

What is the function of antibodies in the immune response?

• Antibodies bind to specific antigens on pathogens, marking them for destruction by other immune cells.

• Antibodies directly kill pathogens by releasing toxins.

• Antibodies enhance the growth of pathogens in the body.

• Antibodies serve as a source of energy for immune cells.

What is an antibody?

• A type of white blood cell that fights infections.

• A Y-shaped protein produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.

• A hormone that regulates blood sugar levels.

• A molecule that carries oxygen in the blood.

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

• Memory cells are short-lived cells that attack pathogens immediately upon infection.

• Memory cells are long-lived immune cells that remember past infections and enable a faster response upon re-exposure to the same pathogen.

• Memory cells are responsible for producing antibodies during the first exposure to a pathogen.

• Memory cells are involved in the digestion of pathogens within immune cells.

What are the primary components of the immune system?

• Red blood cells, platelets, and plasma

• White blood cells, antibodies, the lymphatic system, and organs like the spleen and thymus

• Neurons, synapses, and neurotransmitters

• Hormones, enzymes, and digestive organs

What is the significance of the immune response?

• It helps in digestion and nutrient absorption.

• It is essential for protecting the body against infections and diseases by identifying and eliminating pathogens.

• It regulates body temperature and maintains homeostasis.

• It is responsible for the production of hormones.

What role do white blood cells play in the immune system?

• They transport oxygen in the blood.

• They are crucial for the immune response; they identify and attack pathogens.

• They help in the digestion of food.

• They produce hormones that regulate metabolism.

How do vaccines work?

• Vaccines cause the disease to develop immunity.

• Vaccines stimulate the immune system to produce an immune response without causing the disease, often by introducing a harmless form of the pathogen.

• Vaccines are only effective if given after exposure to the disease.

• Vaccines work by directly killing the pathogens in the body.

What happens during an organ transplant in relation to the immune system?

• The immune system may recognize the transplanted organ as foreign due to its antigens, leading to an immune response.

• The immune system completely accepts the transplanted organ without any reaction.

• The immune system enhances the function of the transplanted organ immediately.

• The immune system ignores the transplanted organ and does not respond.