Communicable disease Flashcards

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1
Q

what are pathogens

A

microorganisms that enter the body
cause communicable (infectious) diseases that can spread
can infect both plants and animal cells
can be bacteria or viruses or protists or fungi

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2
Q

what are bacteria and what can they do

A

very small living cells that can reproduce rapidly

make you feel ill by producing toxins that damage you cells and tissues

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3
Q

what are viruses and what can they do

A
not cells - much smaller
can produce rapidly
like inside cells and replicate themselves using cells' machinery to produce copies
cells burst when releasing viruses
cell damage makes you feel ill
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4
Q

what are protists and what can they do

A

single-celled eukaryotes
parasites that live on or inside other organisms and can cause damage
often transferred to the organism by a vector that doesn’t get the disease itself

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5
Q

what is fungi and what does it do

A

single-celled
body made of hyphae which produce spores
grow and penetrate human skin and plant surface causing disease

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6
Q

name and describe the three different ways pathogens can be spread

A

water - drinking or bathing in dirty water - cholera
air - breath - cough or sneeze
direct contact - touching contaminated surfaces

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