Microbes & flora Flashcards

1
Q

What are the 5 microbial classes?

A
  • Viruses
  • Bacteria
  • Fungi
  • Parasites
  • Prions
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2
Q

What are the differences between viruses & bacteria?

A

Viruses - no ribosomes, DNA or RNA, seen by EM, 10-100s of genes, can infect bacteria

Bacteria - ribosomes, DNA + RNA, seen by light microscope, 100-1000s of genes

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3
Q

What does the cell wall of fungi contain?

A

Chitin

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4
Q

What are the differences between protozoa & metazoa parasites?

A

Protozoa - single celled e.g. amoeba

Metazoa - multi-celled e.g. anthrapods, worms

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5
Q

What are prions?

A

Protein infectious particles

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6
Q

What is colonisation?

A

Presence of commensal or opportunistically pathogenic organisms not causing harm

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7
Q

What is infection?

A

Situation in which a microbe is established and growing in a host, whether or not the host is harmed

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8
Q

What are pathogens?

A

micro-organisms that can cause disease

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9
Q

What are the key features of the structure of bacteria?

A

Capsule, flagella, pili, cell wall, plasmids

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