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Catalase is an enzyme that helps to break down hydrogen peroxide into water and oxygen. It is important in cells to protect them from the harmful effects of hydrogen peroxide, a byproduct of various metabolic processes, by preventing oxidative damage.

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What two groups of bacteria can be differentiated with the catalase test?

The two groups of bacteria that can be differentiated with the catalase test are catalase-positive bacteria, which produce the enzyme catalase and can break down hydrogen peroxide into water and oxygen, and catalase-negative bacteria, which do not produce the catalase enzyme. This test helps in distinguishing between different types of bacteria based on their ability to produce catalase.


Why salmonella typhi is catalase positive?

it should test + for catalase but Salmonella isolates are moderate catalase reactors.


Why is it avisable to perform test of unknown catalase positive organism along with the organism you are testing?

you need to test both the experiment-organism and an organism which you already know is catalase-positive, in the same environment in order to compare the results and determine if your experiment-organism is catalase-positive. - See more at: http://www.chacha.com/question/why-is-it-advisable-to-perform-a-catalase-test-on-a-known-catalase%26%2345%3Bpositive-organism-along-with-the-organism-you-are-testing#sthash.oChX8ZqW.dpuf


What enzyme distinguishes staphylococci from streptococci?

The enzyme catalase distinguishes staphylococci from streptococci. Staphylococci produce catalase, which breaks down hydrogen peroxide into water and oxygen, while streptococci do not produce catalase. This difference in catalase production allows for a simple biochemical test to differentiate between these two bacteria.


Where is catalase found apart from the liver?

Catalase is also found in potatoes


Is veillonella catalase positive?

Yes, Veillonella is catalase negative.


Are Chryseobacterium Catalase plus or Catalase negative?

Chryseobacterium species are catalase-positive, meaning they produce the enzyme catalase, which helps break down hydrogen peroxide into water and oxygen. This enzyme leads to the formation of bubbles when hydrogen peroxide is added to a bacterial culture.


Catalase test useful for differentiation of staph?

The main criterion for differentiation between Staphylococcus and Streptococcus genera is the catalase test. Staphylococci are catalase positive whereas Streptococci are Catalase negative. Catalase is an enzyme used by bacteria to induce the reaction of reduction of hydrogen peroxide into water and oxygen.


Reaction of Bacillus Megaterium in a catalase test?

Bacillus megaterium is catalase-positive, meaning it produces the enzyme catalase which breaks down hydrogen peroxide into water and oxygen. In a catalase test, if Bacillus megaterium is added to hydrogen peroxide, you would observe the formation of bubbles or effervescence due to the release of oxygen gas. This is a positive catalase test result for Bacillus megaterium.


Why don't obligate anaerobes require catalyse?

Because they die in the presence of catalase. They also die in the presence of oxygen, due to the absence of superoxide dismutase and catalase. It converts the lethal superoxide inside their cells due to the presence of oxygen.


What medium is use for catalase test?

Hydrogen peroxide is the medium used for the catalase test.


What is the turnover number for catalase?

The turnover number for catalase is extremely high. One molecule of catalase can easily convert 400 million molecules of hydrogen peroxide to H2O.