Human Defence Systems (AQA GCSE Biology): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
ShowHide
Practise the questions
13 questions from this quiz
What is the role of the non-specific defence system?
What is the role of the non-specific defence system?
To prevent pathogens entering the body
How does the skin act as a defence against pathogens?
How does the skin act as a defence against pathogens?
As a physical barrier
What do skin flora do to protect the body?
What do skin flora do to protect the body?
Compete with bad microorganisms
How does the nose prevent pathogens entering the lungs?
How does the nose prevent pathogens entering the lungs?
Hairs and mucus trap particles
What is the function of cilia in the trachea and bronchi?
What is the function of cilia in the trachea and bronchi?
Beat to waft mucus upwards
How does the stomach protect against pathogens?
How does the stomach protect against pathogens?
Produces hydrochloric acid to kill them
What does the specific immune system do?
What does the specific immune system do?
Destroys pathogens that enter the body
How many different ways can white blood cells act?
How many different ways can white blood cells act?
Three
What is phagocytosis?
What is phagocytosis?
Engulfing and consuming pathogens
Where are antigens found?
Where are antigens found?
On the surface of pathogens
What happens when antibodies bind to pathogens?
What happens when antibodies bind to pathogens?
Pathogens clump together
What happens if you are infected again with the same pathogen?
What happens if you are infected again with the same pathogen?
Antibodies produced at a faster rate
What is the function of antitoxins?
What is the function of antitoxins?
Neutralise toxins by binding to them