GRAM-POSITIVE coccus: Staphylococcus bacillus: Bacillus, Clo… Questions GRAM-POSITIVE cоccus: Stаphylоcоccus bаcillus: Bаcillus, Clostridium GRAM-NEGATIVE bacillus: Proteus, Pseudomonas, Escherichia, Serratia CATALASE positive: Bacillus, Escherichia, Proteus, Pseudomonas, Serratia, Staphylococcus negative: Clostridium, Lactococcus INDOLE positive: Escherichia, Proteus negative: Bacillus, Clostridium, Lactococcus, Pseudomonas, Serratia, Staphylococcus UREASE positive: Proteus, Staphylococcus negative: Bacillus, Clostridium, Escherichia, Lactococcus, Pseudomonas, Serratia SUCROSE FERMENTATION acid and gas: Bacillus acid: Escherichia, Lactococcus, Proteus, Serratia, Staphylococcus negative: Clostridium, Pseudomonas Use the dichotomous key above to answer the following questions. Identify the gram-negative, indole negative, urease negative, sucrose acid production, rod Show Answer Hide Answer