infection and response 0.0 / 5 ? BiologyMicrobes and diseaseGCSEAQA Created by: charlottekennedyCreated on: 25-01-17 15:06 what are the main 4 types of pathogens? bacteria, fungi, virus and protozoa 1 of 6 what are the sizes of the 4 pathogens? virus (smallest) bacteria, protozoa (biggest) fungi 2 of 6 what is a virus? none living, consist of a strand of nuclear acid either DNA or RNA. passed by sneezing. 3 of 6 what is bacteria? microscopic, thrive in diverse envirnoments, live within soil, ocean and inside the human gut. curdle milk into yogurt or help with digestion. 4 of 6 what is protozoa? single celled, eg malaria. 5 of 6 what is fungi? cause athlete foot, fungi is found in every habitat 6 of 6
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