Puttoff Lecture LOs 11, 12, 13 Flashcards

1
Q

flagella

A

these are the locomotion devices; they are attached to a basal body and run through both cell membranes in G- and cell walls in both G- and G+.

when they rotate the flagella rotates, giving it chemotaxis

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2
Q

Spirochetes chemotaxis

A

has a flagella that runs under the cell membrane from back to front; they are called periplasmic flagella

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3
Q

Pilli

A

allow for bacterial adherence

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4
Q

capsules

A

polysaccharide capsules that resist phagocytosis: macs and neuts can ingest/digest them

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5
Q

Indian ink stain

A

test to identify bacteria that do not take up dye

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6
Q

Quellung reaction

A

bacteria are mixed with antibodies that bind to the capsule: because of osmosis, the capsule begins to swell and can be seen under a microscope

capsules can be targets with antibodies as well for opsonization

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7
Q

Endospores

A

two kinds, both G+

Clostridium and bacillus

metabolically dormant form that resists temperature/chemical changes

autoclaves are used to destroy them

consist of 5 things: cell mem, thick peptidoglycan mesh, another cell membrane, a wall of keratin like protein, an outer layer called exosporium

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8
Q

Biofilms

A

sugar coats that allow them to stick to prosthetic devices and protects against antibodies

catheters especially sensitive

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9
Q

Listen Sally Yer Friend Bruce Must Leave Now

A

facultative intracellular organisms

  1. listeria monocytogenes
  2. Salmonella
  3. Yersinia
  4. Francisella tularensis
  5. Brucella
  6. Legionella
  7. Mycobacterium
  8. Nocardia

these guys can be phagocytosed

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