Viral and fungal diseases

Question 1

describe measles

Answer 1

spread by infected droplets from sneeze or cough
develop red skin rash - fever
serious or fatal if there are complications
most people vaccinated when young

Question 2

describe HIV

Answer 2

spread by sexual contact - exchanging bodily fluids
flu-like symptoms - usually don’t experience symptoms for several years
controlled by antiretroviral drugs
attacks immune cells
if immune system damaged - can’t fight other infections or cancers

Question 3

describe tobacco mosaic virus

Answer 3

affects many species of plants
causes mosaic pattern on leaves
become discoloured - can’t photosynthesise

Question 4

describe rose black spot

Answer 4

fungus
purple or black spots on rose leaves
photosynthesis can't happen
spread by water or wind
treated using fungicides and removing infected leaves