Second line of defence (Edexcel GCSE Biology Combined Science): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Role of phagocytes
Role of phagocytes
Digest pathogens
B-Lymphocytes function
B-Lymphocytes function
Involved in specific immune response
Where are antigens found?
Where are antigens found?
On cell membrane of pathogens
What produces antibodies?
What produces antibodies?
White blood cells (B cells)
Two ways antibodies work against pathogens
Two ways antibodies work against pathogens
Punch holes in microbes; stick them together
Function of anti-toxins
Function of anti-toxins
Counteract toxins produced by pathogen
What is a pathogen?
What is a pathogen?
Microorganism that causes disease
What are antigens?
What are antigens?
Unique molecules/proteins on pathogen surface
What happens when lymphocyte recognises antigen?
What happens when lymphocyte recognises antigen?
Activates and starts immune response
Effect of antibodies binding to antigens
Effect of antibodies binding to antigens
Neutralise pathogen or mark for destruction