pathogens Flashcards

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1
Q

what is a pathogen ?

A

. a disease causing micro - organism

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2
Q

are all micro - organisms pathogens?

A

. no, some can be harmless some can even be used for antobiotics

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3
Q

what are the 4 examples of pathogens?

A

. bacteria
. viruses
. protists
. fungi

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4
Q

what does a bacteria cell contain?

A

. a cytoplasm
. no nucleus just a circular strand of DNA

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5
Q

how do bacteria reproduce?

A

. by dividing in two to form clones

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6
Q

What are the features of viruses ?

A

. smaller than bacteria
. have a protein coat

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7
Q

how do viruses reproduce?

A

. can only reproduce in a host cells, reproducing virus destorys cell meaning virus is free to attack other cells

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8
Q

how are communicable diseases spread?

A

. contact
. aerosol
. bodily fluids
. water
. insects
. contaminated food

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