A Level Biology: Primary Non-Specific Defence
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Latest content A Level Biology: Primary Non-Specific Defence
Give four examples of primary non-specific defences against pathogens in animals 
skin, blood clotting, mucous, expulsive reflexes 
 
 
 
What is the outer layer of skin called? 
epidermis 
 
 
 
What are kertinocytes? 
epidermal cells that produce karatin 
 
 
 
What % of cells in the epidermis are keratinocytes? 
90% 
 
 
 
How and where are keratinocytes produced? 
by mitosis at the base of the epidermis 
 
 
 
True or false: keratinocytes migrate out to the skins surface but die by the time ...
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A Level Biology: Primary Non-Specific Defence•A Level Biology: Primary Non-Specific Defence
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Give four examples of primary non-specific defences against pathogens in animals 
skin, blood clotting, mucous, expulsive reflexes 
 
 
 
What is the outer layer of skin called? 
epidermis 
 
 
 
What are kertinocytes? 
epidermal cells that produce karatin 
 
 
 
What % of cells in the epidermis are keratinocytes? 
90% 
 
 
 
How and where are keratinocytes produced? 
by mitosis at the base of the epidermis 
 
 
 
True or false: keratinocytes migrate out to the skins surface but die by the time ...