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Chapter 10 : Disease and Immunity
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Obesity, Tooth decay, Cholera and Rickets - ehich of the options below is an example of a transmissible disease?
Cholera
When a tissue is transplanted from a female donor to a male recipient, it may be rejected. What is the main cause of rejection?
antibody production
Name a disease that can be transmitted to another person through blood
HIV
The immune systen recognise which part of the pathogen?
antigen
The blood contains lymphocytes. What is the purpose?
antibody production
How can we control the spread of disease?
Personal hygiene/washing hands , proper disposal of waste , drinking clean water
What is agglutination of pathogen?
Antibodies clump the pathogen signalling for phagocytosis to take place. Phagocytes will engulf and ingest the pathogen
Explain about antibody production
Specific antigen binds to receptor on the lymphocytes. Antigen - receptor binding activates the lymphocytes to produce antibodies. Antibodies attach onto their
True or False : Every pathogen has its own antigen; specific shapes
True
What is the function of mucus in our body?
Traps pathogens and its sticky substances and release it by coughing or sneezing
Two types of mechanical barrier
skin and nose hair
What are the three defense mechanism in our body?
Mechanical, Chemical and Cell
What is a transmissible disease?
Disease in which pathogen can move from one host to another
What is this cell called?
Phagocytes
True or False : Antibodies are made of white blood cells called lymphocytes
True
True or False : An antibody is a protein produced by the body in response to an antigen
True
Share three facts about lymphocytes
white blood cell, large nucleus,produce antibodies when in contact with pathogen, no granules in the cytoplasm
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