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Why does Bacillus cereus ferment Glucose and not Lactose or Sucrose?
Bryanmcqueen37
Because bacillus cereus is a Gram-positive, spore-forming, and rod-shaped, it\'s only able to ferment glucose.
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∙ 10y ago
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Does sporosarcina urea ferment glucose?
Sporosarcina urea ferments glucose and lactose but not sucrose. It is a type of bacteria of the genus Sporosarcina, and is closely related to the genus Bacillus.
What carbohydrates can Enterobacter aerogenes ferment?
90% to 100% of Enterobacter aerogenes strains can ferment glucose, sucrose, and lactose. The same percentage of strains produce gas as a byproduct of that fermentation.
Does micrococcus roseus test positive for mixed acid fermentation?
Micrococcus roseus ferments sucrose, but no gas. Does not ferment lactose, glucose, or mannitol. Beta hemolitic. Catalase positive. Pink colonies of groth
If a bacteria cannot ferment glucose why not test its ability to ferment other carbohydrates?
The human race. When identifying bacteria with a wide range of carbohydrates are tested. Some of the most common carbohydrates utilized to differentiate bacteria are; Glucose, Lactose, Sucrose, Mannitol, Arabinose, Fructose, Galactose, Mannose and more.
Could a sugar other than lactose be used in media for coliform detection?
yes sucrose can be used to identify coliforms because coliforms can ferment sucrose faster then lactose resulting in an earlier color change and therefore earlier detection.
Does sporosarcina urea ferment glucose?
Sporosarcina urea ferments glucose and lactose but not sucrose. It is a type of bacteria of the genus Sporosarcina, and is closely related to the genus Bacillus.
What carbohydrates can Enterobacter aerogenes ferment?
90% to 100% of Enterobacter aerogenes strains can ferment glucose, sucrose, and lactose. The same percentage of strains produce gas as a byproduct of that fermentation.
Is bacillus subtilis positive for glucose fermentation?
B. subtilis does not ferment glucose nor lactose
What type of bacteria is typhoid causing bacteria?
The are gram negative bacillus shaped bacteria. They are facultative anaerobic bacteria. They ferment the glucose to produce acid and gas. They ferment the sulfur containing amino acids to produce H2S gas. They do not ferment the lactose.
Does bacillus megaterium ferment glucose?
Yes, acid is produced but gas is not.
Does micrococcus roseus test positive for mixed acid fermentation?
Micrococcus roseus ferments sucrose, but no gas. Does not ferment lactose, glucose, or mannitol. Beta hemolitic. Catalase positive. Pink colonies of groth
If a bacteria cannot ferment glucose why not test its ability to ferment other carbohydrates?
The human race. When identifying bacteria with a wide range of carbohydrates are tested. Some of the most common carbohydrates utilized to differentiate bacteria are; Glucose, Lactose, Sucrose, Mannitol, Arabinose, Fructose, Galactose, Mannose and more.
Is P vulgaris a lactose fermenter?
No Proteus Vulgaris does not ferment lactose
Could a sugar other than lactose be used in media for coliform detection?
yes sucrose can be used to identify coliforms because coliforms can ferment sucrose faster then lactose resulting in an earlier color change and therefore earlier detection.
Is Staphylococcus aureus lactose frementing bacteria?
Yes, it can ferment lactose. Mannitol Salt Agar is used to identify S.aureus. When it ferments D-mannitol, it produces an acid which turns the agar yellow from red. S.epidermidis will grow, but the agar remains red.
What class of biological molecule is responsible for the ability of different bacteria to ferment different sugars?
Enzymes - for example, lactose relies on beat-galactosidase and sucrose relies on sucrase. Once in monosaccharide form, they are further hydrolyzed (like glucose is in glycolysis).
Explain why the TSI medium contains a lower concentration of glucose than of lactose and sucrose?
When any sugar is metabolized under anaerobic conditions (fermentation), there is increased acid production; thus the butt of the tube remains acid for a longer period of time. When glucose only is fermented, acid is produced throughout the medium but due to the relatively low concentration of glucose in the medium and the aerobic metabolism that is present on the slant, nitrogenous metabolic end products soon change the reaction of the slant to alkaline. These alkaline products neutralize the small amounts of acids present in the slant but are unable to neutralize the large amounts acid present in the butt. Thus, the appearance of an alkaline (red) slant and an acid (yellow) butt after 24 hours incubation indicates that the organism is a glucose fermenter but is unable to ferment lactose and sucrose. Bacteria that ferment lactose or sucrose (or both), in addition to glucose, produce such large amounts of acid that the oxidative deamination of protein that may occur in the slant does not yield enough alkaline products to cause a reversion of pH in that region. Thus, these bacteria produce an acid slant and acid butt. The inclusion of sucrose permits separation of certain Proteus organisms which ferment sucrose from the salmonellae since both of these groups of organisms are lactose-negative and both may produce hydrogen sulfide.AC
