MCQs on biochemical tests reaction of Enterobacteriaceae family (gram negative bacteria) 1.Which biochemical test assesses the ability of bacteria to ferment lactose, sucrose, and glucose, as well as produce gas and hydrogen sulfide? a) Indole Test b) Methyl Red Test c) Voges-Proskauer Test d) Triple Sugar Iron Agar (TSI) Test 2.The production of red color after the addition of the MR indicator indicates a positive result for which of the following test? a) Citrate Utilization Test b) Indole Test c) Methyl Red Test d) Urease Test 3.Which of the following is a non lactose fermenter gram negative bacteria? a) Escherichia coli b) Enterobacter aerogenes c) Klebsiella pneumoniae d) Salmonella typhi 4. Blackening of the medium in the Sulfur Indole Motility (SIM) Test indicates: a) Citrate utilization b) Hydrogen sulfide (H2S) production c) Indole production d) Motility 5.The ability of bacteria to hydrolyze urea to produce ammonia and carbon ...