Immunity

Front

What is the role of antibodies in the immune system?

Back

Antibodies are proteins produced by B cells that specifically target and neutralize pathogens such as bacteria and viruses.

Front

Define pathogen.

Back

A pathogen is any organism, such as a virus, bacteria, or parasite, that can cause disease.

Front

What are the four main types of pathogens?

Back

The four main types of pathogens are bacteria, viruses, fungi, and parasites.

Front

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

Back

Memory cells help the immune system remember previously encountered pathogens, allowing for a faster and more effective response upon re-exposure.

Front

What are antigens?

Back

Antigens are substances that trigger an immune response, often found on the surface of pathogens.

Front

How do T-cells contribute to the immune response?

Back

T-cells are a type of lymphocyte that play a central role in cell-mediated immunity, helping to destroy infected cells and coordinate the 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 infection or vaccination, while passive immunity is provided when antibodies are transferred from another source, such as from mother to child.

Front

What is the role of phagocytes in the immune system?

Back

Phagocytes are immune cells that engulf and digest pathogens and debris, playing a crucial role in the body's defense.

Front

What is vaccination and how does it work?

Back

Vaccination involves introducing a harmless form of a pathogen into the body to stimulate an immune response and build immunity without causing disease.

Front

What is herd immunity?

Back

Herd immunity occurs when a significant portion of a population becomes immune to a disease, making its spread unlikely and protecting those who are not immune.