1) Which of these is not an example of our bodies first line of defence? a) Skin b) Mucous c) Stomach Acid d) White blood Cells 2) Which of the following is an example of our bodies second line of defence? a) Red Blood Cells b) White blood cells c) Platelets 3) Which word is used to describe a harmful microbe in the body? a) Pathogen b) Antibody c) Antigen 4) What do white blood cells produce to fight pathogens? a) Antigens b) Antibodies 5) Antibodies are specific to the pathogen they fight. a) True b) False 6) Another way white blood cells fight pathogens is by first engulfing them then - a) Dissolving b) Digesting c) Dissapearing

Immune System

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النمط البصري

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