Viral, Fungal and protist diseases Flashcards
(5 cards)
What is measles ? ( VIRAL DISEASE )
VIRAL disease, spread by droplets from infected person when they cough or sneeze
People with measles develop a red skin rash and show signs of fever
Measles can be serious or even fatal if there are complications, For example measles can lead to Pneumonia or brain infection called encephalitis
Most people are vaccinated against measles when they’re young
What is HIV ? ( VIRAL DISEASE )
( VIRAL DISEASE ) spread by sexual contact or by exchanging bodily fluids such as blood which can happen when people share needles when taking drugs
Initial flu like symptoms for few weeks, usually person doesn’t experience any symptoms for several years . During this time HIV is controlled by antiretroviral drugs which stop virus replicating in body.
This virus attacks immune system and if its badly damaged , it can’t cope with other infections or cancers . At this stage HIV virus is known as Aids
What is tobacco mosaic virus ? ( VIRAL DISEASE )
virus affects many species of plants e.g. tomato
Causes a mosaic pattern on plants and leaves - parts of leaves become discoloured
Decolourisation means plant can’t carry out photosynthesis as virus affects growth
What is Rose plant spot ? ( fungal disease )
fungus that cause purple or black spots to develop on the leaves of rose plants , Leaves turn yellow and drop off.
Photosynthesis can’t happen so plant doesn’t grow very well
It spreads through the environment in water or by the wind
Gardeners can treat the disease using fungicides and by stripping the plant of the affected leaves. These leaves then need to be destroyed so that the fungus cannot spread to other rose plants
What is Malaria ? ( protist disease )
caused by protist
Part of the malarial protists life cycle takes place inside the mosquito. The mosquitos are vectors and they pick up the malarial protist when they feed on an infected animal
Every time the mosquito feeds on another animal, it infects it by inserting the protist into the animals blood vessels
Malaria causes repeating episodes of fever. It can be fatal.
The spread of malaria can be reduced by stopping the mosquitoes from breeding
people can be protected from mosquitoes using insectidies and mosquiote snets
