Biocheminsider

By Prof Walter Jaoko Introduction Motility is one characteristic used in the identification of bacteria.The mobility in bacteria is largely credited to presence of large hair-like appendages over the body called as “flagella.” These are the locomotor organ of bacteria, though some move using axial filaments.Bacteria are classified into two: motile and non-motile. A motile … Read more

By Prof Walter Jaoko Basic Characteristics Properties (Yersinia pestis) Capsule Positive (+ve) Catalase Positive (+ve) Citrate Negative (-ve) Flagella Non-Flagellated Gas Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Negative (-ve) Growth in KCN Negative (-ve) H2S Negative (-ve) Hemolysis Negative (-ve) Indole Negative (-ve) Motility Non-Motile MR (Methyl Red) Positive (+ve) Nitrate Reduction Positive … Read more

By Prof Walter Jaoko Basic Characteristics Properties (Streptococcus canis) CAMP Negative (-ve) Catalase Negative (-ve) Gram Staining Positive (+ve) OF (Oxidative-Fermentative) Facultative anaerobes Shape Cocci Urease Negative (-ve) VP (Voges Proskauer) Negative (-ve) Fermentation of Adonitol Negative (-ve) Arabinose Negative (-ve) Arabitol Negative (-ve) Arbutin Positive (+ve) Dulcitol Negative (-ve) Erythritol Negative (-ve) Fructose Positive … Read more

Reviewed By Prof Walter Jaoko Shigella flexneri is a species of gram-negative, non-spore-forming bacterium belonging to the genus Shigella. Shigella flexneri is primarily associated with bacillary dysentery, a form of gastroenteritis characterized by severe diarrhea with blood and mucus. Symptoms of shigellosis can include abdominal cramps, fever, and dehydration. The infection is typically transmitted via … Read more

By Prof Walter Jaoko Basic Characteristics Properties (Providencia stuartii) Capsule Non-Capsulated Catalase Positive (+ve) Citrate Positive (+ve) Flagella Flagellated Gas from glucose Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Negative (-ve) Growth in KCN Positive (+ve) H2S Negative (-ve) Indole Positive (+ve) Motility Positive (+ve) MR (Methyl Red) Positive (+ve) Nitrate Reduction Positive (+ve) … Read more

By Prof Walter Jaoko Basic Characteristics Properties ( Proteus mirabilis ) Capsule Negative (-ve) Catalase Positive (+ve) Citrate Positive (+ve) Flagella Positive (+ve) Gas from Glucose Positive (+ve) Gelatin Hydrolysis Positive (+ve) Gram Staining Negative (-ve) Growth in KCN Positive (+ve) H2S Positive (+ve) Indole Negative (-ve) Motility Positive (+ve) MR (Methyl Red) Positive (+ve) Nitrate Reduction … Read more

By Prof Walter Jaoko Basic Characteristics Properties (Listeria monocytogenes) CAMP Positive (+ve) Catalase Positive (+ve) Flagella Flagellated Gas Negative (-ve) Gram Staining Positive (+ve) H2S Negative (-ve) Hemolysis Beta Hemolysis Indole Negative (-ve) Motility Motile MR (Methyl Red) Positive (+ve) Nitrate Reduction Negative (-ve) Oxidase Negative (-ve) Shape Rods Spore Non-Sporing Urease Negative (-ve) VP … Read more

Characteristics Klebsiella pneumoniae Capsule +ve Catalase +ve Citrate +ve Flagella -ve Gas +ve Gelatin Hydrolysis -ve Gram Staining -ve Growth in KCN +ve H2S -ve Indole -ve Motility -ve MR (Methyl Red) -ve MUG Test +ve Nitrate Reduction +ve OF (Oxidative-Fermentative) Fermentative Oxidase -ve Pigment -ve Shape Rod Spore -ve TSIA (Triple Sugar Iron Agar) … Read more

By Prof Walter Jaoko Basic Characteristics Properties (Kingella kingae) 10% Bile Negative (-ve) Capsule Positive (+ve) Catalase Negative (-ve) Citrate Negative (-ve) Coagulase Negative (-ve) Gas Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining  Gram-negative H2S Variable Hemolysis Positive (+ve) Indole Negative (-ve) Motility Negative (-ve) 6% NaCl Negative (-ve) Nitrate Reduction Negative (-ve) Nitrite Reduction … Read more