Spec J247
Revise OCR GCSE Biology 6.3.3 Spread of communicable diseases with the question bank, lessons, revision guides, and flashcards.
explain how communicable diseases (caused by viruses, bacteria, protists and fungi) are spread in animals and plants • scientific quantities, number of pathogens, number of infected cases, estimating number of cases. explain how the spread of communicable diseases may be reduced or prevented in animals and plants • detection of the antigen, DNA testing, visual identification of the disease
