Micro Practical Flashcards
Aspergillus
______ on ______ agar
Green on saboraud dextrose agar
Aspergillus
Infections caused?
Aspergillosis
Allergic Bronchopulmonary aspergillosis
Chronic pulmonary aspergillosis
Aspergillus
Sample ?
Diagnosis?
Sputum, tissue biopsy, BAL
Microscopy, culture, sensitivity, PCR
Aspergillus
Agar?
Staining agent?
Saboraud dextrose
Lactophenol cotton blue stain
Aspergillus
Treatment?
Voriconazole
Itraconazole
Proteus _______
_______ motility on ______ agar
Mirabilis
Swarming
Blood
Proteus 3 each
Infections ?
Treatment??
UTI, pneumonia, wound infections
Penicillin , ampicillin, cephalosporin
Proteus
______ positive
H2S (pos or neg?)
Gram _____
_____ shape
Motile or non-motile
Lactose (ferment or non-ferment?)
_____ odor
Habitat?
Urease; pos
Neg ; rod
Motile
Non-ferment
Fishy ; soil,water
Agar; Normal ; lactose fermenters
MacConkey
Eosin methylene Blue
Yellow; pink
Red; green with a metallic sheen
The dye methylene blue in the medium , EMB, helps to ____________________________________
inhibit the growth of gram-positive bacteria
All Enterobacteriales are gram _______ , except???
Negative
Pseudomonas
We have proteus ———— or proteus ________
Mirabilis
Vulgaris
usefulness of christensen medium?
Detect Urease production
Urease production
Medium: ?
Indicator: ?
Positive reaction is from —— to _______
Other urease positive organisms
christensen medium
Phenol red
Yellow to pink/red
Proteus, H,pylori, brucella, yersenia, corynebacterium
Corynebacterium
Gram ______
_____ shape
Motility?
Catalase (pos or neg?)
Virulence factors??
Other species
Negative
Club
Non-motile
Positive
Fimbriae,pilli, diphtheria toxin
Gravis, mitis, intermedius
Diphtheria toxin has 3 domains
List
Active
Binding
Hydrophobic
The agar can be divided into two. Top and bottom, bottom turning _____ means ______ fermentation. Top turning _______ means _______ fermentation.
Black is _____ production.
Space at the bottom is ____ production
Yellow; glucose
Yellow; lactose
H2S; gas
metachromatic granules of Corynebacterium diphtheriae can be observed with which stains
Albert stain
Lugol iodine
Methylene blue
Describe the metachromatic granules of corynebacterium
Green bacilli with bluish slick
_________ is used for selective isolation and differentiation of Corynebacterium diphtheriae types.
Cystine Tellurite agar
Corynebacterium
_______ test for toxin production, and what’s the presentation
Elek’s test
Precipitin line/zone of equivalence
Aspegullus Flavus colonies on saboraud agar is ???
Describe aspergillus Niger
Green
Black center, bright halo around it
Neisseria gonorrhea
Medium- ?
Gram ______
Shape?
Treatment
Infections
Modified martins-thayer
Negative
Bean shaped/ diplococci
Third generation cephalosporins
Genital gonorrhea, pharyngeal gonorrhea
Oxidase test
A drop of oxidase reagent was was placed on the right and left side of the filter paper
When N.gonorrhea is dropped on one side, it turns it _____ or ______ while E.coli _____________________
Purple or black
Does not produce anything
NAAT-??
Nucleic acid amplification test
E.coli
Gram _______
Motility?
oxidase (pos or neg?)
Ferment lactose or non-fermenter
H2S (pos or Neg?)
Negative ; motile
Negative
Ferment lactose
Negative
E.coli
Toxin produced?
Disease produced?
Shiga-toxin; Cholera toxin
UTI, diarrhea, sepsis, meningitis
E.coli
Species?
ETEC
EHEC
EIEC
EAEC
Media : normal color; indicator
MacConkey
EMB
Klighler iron
Christensen
Yellow; neutral red
Red; eosin Y and methylene blue
Red ; phenol red
Yellow; phenol red
Klebsiella
How to recognize it?
Gas or no gas?
Motile or non-motile?
Indole (pos or neg?)
Mucoid colonies
Gas; non-motile
Negative except oxytoca and ornithological
Klebsiella
Other spices ?
Virulence factors?
Disease?
Pneumoniae, oxytoca, granulomatis
Pilli, LPS, polysaccharide capsules, Siderophores
UTI, liver abscess, pneumonia
Mention 2 organism that can be cultured on chocolate agar?
Haemophilus influenzae
Neisseria gonorrhea
Chocolate what is a ________ agar
Enriched
2 selective media where you can find Neisseria
Blood
Chocolate
MYCOBACTERIUM TUBERCULOSIS
Acid fast stain- primary dye is ________, decolonizing agent is __% alcohol for tuberculosis, ____% alcohol for leprae, counter stain is ________ or _______
carbol fuschin
3; 1
methylene blue or Malachite green
MYCOBACTERIUM TUBERCULOSIS
Acid fast organisms are _______,______
Colony morphology of an LJ medium: are _________,_______, and ______
Contents of LJ medium: ____,______,______,_____
Specimen: ______,________,_______, and _____
Disease caused by mycobacteriums : ______,________,_______
Treatment: _____
mycobacteriums, nocardia
non pigmented, rough, and dry
salt, glycerol, malachite green, and antibiotics
Sputum, CSF, gastric washing, and pleural fluid
Tuberculosis, POTT’s disease, leprosy
RIPE
Mycobacterium tuberculosis
Uses of LJ medium: to _______ , test ____________ of _________, and ________
diagnose disease
antibiotic susceptibility of isolate
differentiate species
Mycobacterium tuberculosis
Tb produces large quantity of _____, other mycos don’t
Gold standard is ______ medium
niacin
Lowenstein Jensen
LJ medium could also be used for ______ and ______ besides tuberculosis
Leprae
Bovis
Malachite green is a _____, that ________________ and ___________
dye
Kills normal flora and prevents contamination
Substitute for LJ is _____________ medium
middlebrook TH1
Broth’s media
They utilize ____________, releasing ______, which is detected by the machine
C-palmitic acid
Co2
List 2 counter stains that can be used in place of Ziehl neelsen
Malachite green, Methylene blue
BACTERIODES!
Can cause- ________,________,_______,________
Found in ______,________,_______
Virulence factors- ______,_______
diabetic ulcer, bacteremia, abscesses, decubitus
GI, vagina, urethra
polysaccharide capsule, fimbrae
Bacteriodes
Isolation procedures - use of ________ to remove debris and _________ which accumulates on the _______
sterile toothpicks
white soft tar tar
molar teeth
Bacteriodes
______ and ______, ____ pigmentation on ______ agar
Shiny and smooth
Black
Blood
Bacteriodes
Gram _________
Catalase (pos or neg?)
Superoxide dismutase (pos or neg?)
Negative
Positive
Positive
Bacteriodes
Other species
Treatment
Fragilis, corodens
Drainage of abscess, debridement , metronidazole
All anaerobes are sensitive to _______
All aerobes are sensitive to _________
metronidazole
gentamicin
Clostridium perfringens
List the toxins
Disease it causes
Forms ______ colonies on _____ agar
Alpha, theta
Cellulitis, gas gangrene
Hemolytic ; blood
Clostridium tetani
List the toxins
Disease it causes
Tetanospasmin
Tetanus
Clostridium perfringens
In a broth containing fermentible carbohydrates, its growth is accompanied by production of ______ and ______
hydrogen and Co2
______ medium for ______ activity (____ reaction)
Specific for clostridium perfringens
Egg; lecithinase
Naglar
Clostridium
Gram ______
Grows on ______ agar
_________ broth can be used
Positive
Blood
Thioglycolate
Clostridium tetani
On Robertson red meat cooked medium, it ________ the cooked meat as a result of _______ reaction , while perfringens _________ as a result of ______ reaction
Blackens; proteolytic
Reddens it; saccarholytic
Reducing substances in Robertson Cooked meat?
Haemin
Glutathione
Clostridium
Indole (pos or neg?)
H2S (pos or neg?)
Catalase (pos or neg?)
Oxidase (pos or neg?)
POS
POS
Negative
Negative
Salmonella
Antigens: ?
H2S (pos or neg?)
Disease?
Specimen
Motile or not?
O(somatic), H(flagella), Vi(capsule)
Positive
Gastroenteritis, typhoid, bacteremia
Blood stool urine
Motile
Salmonella
Selective medium
Enrichment medium
Salmonella-shigella
Xyline-Lyosine Deoxycholate agar
Tetrathionate broth, selenite
Salmonella
Treatment
Ampicillin, tetracycline
Hektoen agar
For which organism
Changes seen
Salmonella and shigella
Forms black colonies on a yellow background
Salmonella rapidly ferments xylose , forming ________, then decarboxylate lysine when xylose is exhausted , turning the colonies _____
yellow
red
The _____ test is an advanced way to check for antibodies that your body makes against the salmonella bacteria that causes typhoid fever
Widal