Immune System

Front

What is an antibody?

Back

An antibody is a Y-shaped protein produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.

Front

What is an antigen?

Back

An antigen is a substance that triggers an immune response, often found on the surface of pathogens.

Front

What is a pathogen?

Back

A pathogen is any organism that can cause disease, such as bacteria, viruses, fungi, or parasites.

Front

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

Back

White blood cells are crucial for the immune response; they identify and attack pathogens.

Front

What is the function of antibodies in the immune response?

Back

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

Front

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

Back

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

Front

What is the difference between active and passive immunity?

Back

Active immunity occurs when the body produces its own antibodies in response to an antigen, while passive immunity is when antibodies are transferred from another source.

Front

How do vaccines work?

Back

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

Front

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

Back

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

Front

What is the significance of the immune response?

Back

The immune response is essential for protecting the body against infections and diseases by identifying and eliminating pathogens.