d all of the ave e ammonia and CO d none of the above S The ewayme pheny lalanin
ID: 272945 • Letter: D
Question
d all of the ave e ammonia and CO d none of the above S The ewayme pheny lalanine deaminase can be deectel in a bacterial culture by addition of a.. 10% orhawaqhholb.3%hydrngen peroxide b. c.KOH dnose of the above Se Tve oe ae eA tahe-) Sarch hdrolysis is dewcted by ading graim's iodine to starh mediwm lsdine compleses with the starch molecule and causes the medium to tun blue 37. A skim milk agar plate is inoculated with R sweis. After incuhation at the optimom temperathure for 3448hours a ckoar sne is obsernel aljscent to the growth of R swkis This is evkdence of a fat hydhobsise starch hydrolysis 38. Which of the Rollowing sentences is fase a some gram negative enteric bacteria prshuce the eny me urease b when urease is prowhiced by an organism, alcohol is released. e urea is a waste wowhuct excreted in urine by animals d urease splits urea molecule into carbon dixide and ammonia 39. The advantage of MSA medium over SM10 is that a It favors colony pigmentation by different strains of S aurew b It favors color change as mannitol is fermented e. It favors the growth of Suplylxoi and Streptococe d. h favors growth of catalase negative bacteria 40, which of the following bacteria will grow well in media containing 7.5% sodium chloride? d. all of the above e none of the above rens 41. An alpha hemolytic bacterium that is sensitive to optochin: e. & pyogenes d. all of the above b S agalactia 42. Bacterial decarboxy lation of lysine results in the formation of the alkaline end product a cadaverine b putrescine e, maltose d. hydrogen sulfide 43. True or False (true A; false-B). Salmonella a glucose positive, non-motile and hydrogen sulfide negative bacteria 44. True or False (true-A; false-B). Mac Conkey agar, and Hektoen enteric agar contain bile salts and/or sodium desoxycholate: to inhibit gram negative bacteria 4S. Kliggler's iron agar contains ferrous salts that will react with the hydrogen sulfide liberated by cysteine desulfurase to produce a. an insoluble green precipitate c. an insoluble black precipitateExplanation / Answer
other questions are not properly seen in this photo.
40.b.staphylococcus epidermis
41.a.S.pneumoniae
42.b. putrescine
43.false
they are predominantly motile bacteria.
44.false
they inhibit gram positive bacteria
45.c. insoluble black precipitate
which is ferrous sulphide.
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