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Why will a false-positive catalase test result if the organisms are tested on a medium containing blood?
Wiki User
∙ 13y ago
Because catalase is found in red blood cells.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agobecause catalase is found in the red blood cells.
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Why cant blood agar used in catalase test?
Care must be taken if testing an organism cultured on a medium containing blood because catalase is present in red cells. If any of the blood agar is removed with the colony, a false positive reaction will occur. It is usually recommended, therefore that catalase testing be performed from a blood-free culture medium such as nutrient agar.
What is the liquid containing contrast medium?
Barium
Which medium supports the fewest organisms?
Glucose
How do you sterilize L J medium?
serum containing media such as LJ medium are disinfected by autoclave,inspissator.
Does poor sensitivity or poor specificity cause a false positive from the reaction between inoculating loop and hydrogen peroxide?
Catalase is the enzyme that catalyzes the breakdown of hydrogen peroxide, which in result, turns into water and oxygen. However, if catalase is presence in the medium, it may lead to false positive results.
What is the use of the petridish?
mainly as a growth medium for molecular organisms. such as bacteria, fungi, and single celled organisms
What the use of petri dish?
mainly as a growth medium for molecular organisms. such as bacteria, fungi, and single celled organisms
How would you sterilize a heat-sensitive growth medium containing thermoduric bacteria?
with a filter
What are electrolyets?
an electrolyte is any substance containing free ions that behaves as an electrically conductive medium.
Why wasn't the same medium used for enumeration of all three types of soil organisms?
different organisms ave diferent nutrient needs
What is the used of Petri dish?
mainly as a growth medium for molecular organisms. such as bacteria, fungi, and single celled organisms
What Are Gill Bailers?
are specialized appendages that aquatic organisms use to move the circulatory medium over their gills.
