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What specifically causes colonies of lactose fermenters to be pink-red on MacConkey agar?
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- why macconkey agar and mannitol salt are regard as salective and deffrental medium?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, AlkaliphileDescribe characteristics of Proteus Vulgaris in the Agar: (How does colonies look like (color) and explain does it grow on that agar. Blood Agar (Aerobic) MacConkey EMB PEA Mannitol Salt Agar Chocolate Agar Nutrient Agar
- Which of the following is an organism involved in nitrification? Nitrosomonas Clostridium Azotobacter PseudomonasWhat type of microbe would most likely cause food spoilage in the refrigerator? Othermophile mesophile Opsychrophile psychrotrophwhy is it important that a small amount of inoculum be used in preparation of an agar slant?
- MacConkey agar plates represent ________ medium. a differential a minimal a selective both a differential and a selective both a minimal and a selectiveEnterobacteriaceae species might be differentiated (from one another) by all of the following except: o amino acid fermerntation o lactose fermentation O oxidase test o Eosin Methylene Blue agar o MacConkey agarwhy is it that psychrotrophs placed in TSA medium are incubated at 7oC?
- What type of bacteria is this ? GRAM POSITIVE COCCUS YELLOW PIGMENT CATALASE+ MOTILITY – NITRATE + UREASE + OXIDASE+ INDOLE – CITRATE – GLUCOSE FERM – LACTOSE FERM- SUCROSE FERM -Spores and toxin-producing microorganism produce toxins need higher Aw than minimum Aw for microbial growth. How could food industry benefit from this fact?What 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 broth