Bacteria Flashcards

1
Q

gram staining process acronyms

A

Fans Can Intimidate Dad Sadly

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2
Q

outline gram staining process

A
  1. fixation 2. add crystal violet 3. Add iodine 4. Decolourise with alcohol until no more purple comes off the side 5. Add safranin (pink)
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3
Q

gram positive results

A

will stain purple due to sufficient peptidoglycan layer

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4
Q

gram negative results

A

will stain pink- insufficient peptidoglycan layer to retain safranin

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5
Q

Gram positive cocci’s

A

staplyloccocus

streptococcus

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6
Q
A
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7
Q

which test is used to differentiate straphyloccocus

A

coagulase

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8
Q

staphyloccus bacteria with a negative coagulase test

A

staphylococcus epidermidis

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9
Q

staphyloccus bacteria with a positive coagulase test

A

Staphylococcus aureus

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10
Q

which test is used to differnetiate streptooccus bacteria

A

Hemolysis

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11
Q

partial hemolysis

A

alpha

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12
Q

complete haemolysis

A

beta

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13
Q

no haemoloysis

A

Y- gamma

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14
Q

alpha streptococci

A

partial haemolysis

  • Streptococcus pneumoniae
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15
Q

Beta streptococci

A

complete haemolysis

  • streptococcus pyrogenes
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16
Q
A
17
Q

gamma streptococci

A

no haemolysis

  • Enterococci
18
Q

streptococcus or staphyloccocus

A

Gram positive streptococcus

19
Q

streptococcus or staphylococcus

A

gram positive staphylococcus

20
Q

name 4 gram positive bacillus

A

clostridium

listeria

cornyebacterium

lactobacillus

21
Q

name the gram negative cocci

A

nesseria meningitidis- diplococcus

22
Q

name all gram negative bacillus

A

Legionella

Yersinia

Escherichia

Vibrio (comma shaped)

Salmonella

Helicobacter (comma shaped)

Shigella

Enterobacter

23
Q

are gram negative bacteria usually cocci or bacillus

A

baciilus

24
Q

are gram posiitve bacteria usually bacillus or rod

A

mixed

25
Q

name me 3 encapsulated abcteria

–> which cause problems especially in patients with reduced spleen function

A

Neisseria meningitis

Haemophilus influenza

Streptococcus pneumoniae