a condition that impairs the normal function of an organism.
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what do pathogens do, and name 4 types of pathogen?
cause disease. viruses, bacteria, fungi and protoctista.
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what are protoctista?
a type of single-celled eukaryotic organism.
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define communicable disease?
a disease that can spread between organisms.
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tuberculosis affects...? and is caused by ...?
animals typically humans and cattle. The pathogen responsible is bacterium.
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bacterial meningitis affects...?
humans.
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ring rot affects? which pathogen is responsible?
potatoes and tomatoes. bacterium is responsible.
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HIV/AIDS affects? and is caused by... pathogen?
humans and responsible pathogen is virus.
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influenza affects? caused by?
humans and other animals. pathogen responsible is virus.
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tobacco mosaic virus affects?
plants.
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black sigatoka affects? caused by?
affects banana plants and the pathogen responsible is fungus.
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ringworm affects? caused by?
cattle pathogen responsible is fungus.
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athlete's foot affects? pathogen responsible?
humans. fungus is responsible.
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potato/tomato late blight affects? pathogen responsible?
potatoes and tomatoes and pathogen is protoctist.
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malaria affects? caused by?
animals including humans caused by protoctist.
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define direct transmission?
when a disease is transmitted directly from one organism to another.
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give three ways a disease can be transmitted directly?
droplet infection,(coughing or sneezing droplets of mucus or saliva onto someone), sexual intercourse or touching an infected organism.
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give two examples of diseases that can be spread directly and how?
HIV via sexual intercourse in humans. Athlete's foot can be spread via touch
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define indirect transmission?
when a disease is transmitted from one organism to another via an intermediate.
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whats another name for intermediate, name 4 intermediates?
vectors. Air, water, food or another organism.
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what are spores?
cells that some organisms use to reproduce asexually, including some protoctista and fungi.
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name two examples of indirect transmission?
potato and tomato late blight is spread when spores are carried between plants, first in air then in water. malaria is spread between humans and other animals by mosquitoes, they act as vectors.
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when talking about malaria what do we mean by mosquitoes are vectors?
they dont cause malaria they just spread/carry the protoctista that does.
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Other cards in this set
Card 2
Front
what do pathogens do, and name 4 types of pathogen?
Back
cause disease. viruses, bacteria, fungi and protoctista.
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