Second line of defence (Edexcel GCSE Biology): Flashcards
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What do phagocytes do
What do phagocytes do
Digest pathogens
Role of B-Lymphocytes
Role of B-Lymphocytes
Involved in specific immune response
What produces antibodies
What produces antibodies
White blood cells (B cells)
Where are antigens found on pathogens
Where are antigens found on pathogens
On the cell membrane
Are antigens specific
Are antigens specific
Yes, specific to each species
First way antibodies destroy microbes
First way antibodies destroy microbes
Punch holes in microbes
Second way antibodies destroy pathogens
Second way antibodies destroy pathogens
Stick them together so they can't move and be engulfed by phagocytes
Anti-toxin function
Anti-toxin function
Counteract toxins produced by pathogen
What are pathogens
What are pathogens
Microorganisms that cause disease
What are antibodies
What are antibodies
Proteins produced by B cells
Antibody-antigen relationship
Antibody-antigen relationship
Each antibody is specific to a particular antigen
What recognises antigens on pathogens
What recognises antigens on pathogens
Lymphocytes