AQA - Infection and response

Front

What is a vaccine?

Back

A vaccine is an injection of a dead/inactive pathogen into the body.

Front

Which of the following is a physical barrier that prevents pathogens from entering the body?

Back

Skin.

Front

How do painkillers affect pathogens?

Back

They won't do anything, only relieve pain.

Front

What is a double blind trial?

Back

A clinical study where both participants and researchers are unaware of the treatment assignments.

Front

How does mucus help in defending the body against pathogens?

Back

By trapping pathogens.

Front

What are antibodies?

Back

Proteins produced by the immune system to identify and neutralize pathogens.

Front

What is the role of white blood cells?

Back

To identify, attack, and destroy pathogens.

Front

What is an antigen?

Back

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

Front

What is herd immunity?

Back

When a large percentage of a population becomes immune to a disease, making its spread unlikely.

Front

What is the function of the skin in the immune system?

Back

Acts as a physical barrier to prevent pathogen entry.