What type of bacteria is this ? GRAM POSITIVE COCCUS YELLOW PIGMENT CATALASE+ MOTILITY – NITRATE + UREASE + OXIDASE+ INDOLE – CITRATE – GLUCOSE FERM – LACTOSE FERM- SUCROSE FERM -
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What type of bacteria is this ?
GRAM POSITIVE COCCUS
YELLOW PIGMENT
CATALASE+
MOTILITY –
NITRATE +
UREASE +
OXIDASE+
INDOLE –
CITRATE –
GLUCOSE FERM –
LACTOSE FERM-
SUCROSE FERM -
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- Clostridium Botulinum Physical caracteristics Shape Arrangement Gram status? Acid fast ? Capsule? Produce Endospore? Environmental Condition required for the growth Oxygen Which of these is: Obligate aerobe, obligate anaerobe, facultative anaerobe. Temperature Which of these is: Psychrophile, Mesophile, Thermophile pH Which of these is: Acidophile, Neutralophile, AlkaliphileHelp indetifying the unknown bacteria ? Gram Stain: Purple Cell Morpholgy: Rods Oxygen Requirement: OA Acid Fast Stain: pink Endospore Stain: pink rods Blood agar-hemolysis: no lysis Phenol red-glucose fermentation:red,no gas Phenol red -lactose fermentation:red,no gas Phenol red - mannitol fermentation:red,no gas Phenol red-sucrose fermentation: red,no gas Methyl red:no change Voges-Proskaur: no change Oxidase: no change Catalase: bubbles Nitrate Reduction: red after a & bMycoplasmas are bacteria that lack cell walls. On the basis of this structural feature, which statement concerning mycoplasmas should be true? They are gram-negative. They are subject to lysis in hypotonic conditions. They lack a cell membrane as well. They should contain less cellulose than do bacteria that possess cell walls. They possess typical prokaryotic flagella.
- What is the unknown bacteria? Morphology: Bacillus Gram stain: purple Oxygen requirements: FA Endospore stain: Green Hemolysis: complete Glucose fermentation: yellow, no gas Lactose fermentation: red, no gas Methyl red: red VP: no change Oxidase: no change Catalase: bubbles Nitrate reduction: red after zinc Citrate utilization:blue Urea: orange Starch hydrolysis: halo Gelatin hyrolysis: liquidWhat is the oxygen requirement of this microbe? Thioglycollate Broth -Obligate aerobe=growth only occur at the top band of the broth -Facultative anaerobes= growth uniformly throughout the broth -Obligate anaerobes= growth only at the bottom of the tube -Aerotolerant= growth throughout the tube until just below the surface of the broth -Microaerophiles= growth in a heavy band just below the surface of the brothWhat is the proper term to describe the shape of the bacteria in this picture? Cocci Bacillus O Vibrio Spirillum Pleomorphic
- cell number This bacterium can be classified as a: hyperthermophile psychrophile thermophile mesophile 4ºC 44°C Time 37ºC 22ºCA microbiologist is working with a pure strain of bacteria isolated from a mixed sample. Which of the following would indicate that the bacterium is NOT Helicobacter pylori? Cells have flagella when viewed by flagellar staining. Secretes acids produced from metabolism of sucrose. Cells are curved rods. Produces and secretes urease enzyme. Cells stain Gram negative.Bacteria that prefer to grow at room temperature at low pH are: Mesophilic acidophiles Microaerophilic alkalophiles Psycrophilic neutraphiles Thermophilic acidophiles
- Help indetifying the unknown bacteria ? Gram Stain: Pink Cell Morpholgy: Bacillus Oxygen Requirement: OA Acid Fast Stain: green Endospore Stain: pink rods Blood agar-hemolysis: lysis (yellow clearing) Phenol red-glucose fermentation:red,no gas Phenol red -lactose fermentation:red,no gas Phenol red - mannitol fermentation:red,no gas Phenol red-sucrose fermentation: red,no gas Methyl red:no change Voges-Proskaur: no change Oxidase: purple Catalase: bubbles Nitrate Reduction: red after zinxMatch the description to the correct phase in a standard bacterial growth curve. best time to perform Gram stains [ Choose ] [Choose ] phase in which one would see the highest concentration of endopores lag phase stationary phase phase in which bacteria are most sensitive to log/exponential stage antibiotics death/decline phase many bacteria ih biofilms are in this phase, [Choose] thus are more resistant to antibiotics stage at which "carrying capacity" is reached [Choose ]Which of the following is NOT typical of Halophiles? Choose all that fit the sentence above. Group of answer choices They have peptidoglycan in their cell walls. They have branched lipid membranes They contain colored pigments in their cell membranes They live in high salt conditions