Question
WIDE RULED Poridve resuh for Citrate stilization using Simmon's citte slent will produe A. Deep green color B Deep blue color C. Red color D. Black color Positive reault which of the following A. Mannitol Salt Agar B MacConkey Agar 26 selective and diffretial medium forthe genus wieeer al Medium 110 Both A sod C All of the above E 27 Mannitol ediaar contains Salt Agar mannitol, sodium cbloride, and phemol red. The role of sndande ine A. To select for all gram positive bacteria To select for all gram negative bacteria To inhibit organisms other than Staphylococci To differentiate Manni tol Salt agar (MSA) Staphylococcus medium 110 (SM 28. Which of the folowing is pot a selective and differential medium for the growth of Gram negative te bacteria? A. MacConkey Agar B. Hektoen Agar C. Xylose Lysine Desoxsycbolate (XLD) Agar D Flaid Thioglycollate Medium (FTM) 29. Wheo incubated in Hektoen enteric agar Shigella sp. and Salmonella sp will be expected to produce A Smooth colorless colonies B. Reddish mucoid colonies C. Greenish blue colonies D. Bright orange pigmented colonies Answer True (A) or False B) to the following questions (Number 30 through 40) 30. Staph epidermidis will ferment mannitol 31 Sup& areas will ferment mannitol 32 Staph saprophyticus is coagulase positive 33 Saph area is coagulase positive 4 Strept pesmoniae is resistant to optochin 5 Strept pyogones is sensitive to SXT 36· Shpr nogmer is sensitive to bacitracin 7Shigella is nob-motile 9 Salmonelia produces Hydrogeo Sulfide in SIM med 40. Shigella ia areane positive
Explanation / Answer
25) Positive result for citrate utilization using Simmon's citrate slant will produce deep blue color.
26) Both A and C that is Mannitol Salt Agar and Staphylococcal medium 110 are selective and differential medium for the genus Staphylococcus.
27) Mannitol salt agar contains mannitol, sodium chloride and phenol red. The role of sodium chloride is to inhibit organisms other than Staphylococcus.
28) Fluid Thioglycollate Medium is not a selective and differential medium for the growth of Gram negative enteric bacteria
