blood Flashcards

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1
Q

What are viruses?

A
  • smaller than bacteria
  • no cell wall
  • have a protein coat
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2
Q

What are protoctists?

A

• single celled

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3
Q

What are bacteria?

A
  • single celled

* cell wall, membrane, cytoplasm and plasmids, but no nucleus. Instead circular chromosomes of RNA

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4
Q

give two groups of pathogens?

A

bacteria and virus

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