answersLogoWhite

0


Want this question answered?

Be notified when an answer is posted

Add your answer:

Earn +20 pts
Q: Why does the oxidase reagent need to be fresh?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the function of the test reagent in the oxidase test?

The ability of bacteria to produce cytochrome oxidase can be determined by the addition of the test reagent p-aminodimethylaniline oxalate to colonies grown on a plate medium.


Give explanation why the Oxidase test identifies the presence of cytochrome c oxidase and not the other electron carriers?

An oxidase test relies on a reagent that will change colors when it is oxidized. The reagent used in the test only reacts to cytochrome c oxidase by acting in place of oxygen to receive electrons from the cytochrome.


Is it a valid test if an organism that possesses cytochrome c oxidase and the reagent begins to turn blue at 45 seconds?

No, it is not valid. Results need to be read within 20 seconds because oxygen in the area quickly distorts the results in an experiment of this kind.


What is the difference between Benedict's Reagent and Biuret Reagent?

Benedicts reagent is used to check reducing sugars , it need hat to work and gives red color when positive ,. While biuret reagent is for proteins .there is no need to use heat and gives purple , violet color when positive ..


What are cleaning reagent?

i need a summer job i need a summer job


List two advantages in using the clinitest reagent in preference to Benedict's reagent?

The Clinitest reagent is a self test so it does not need to be performed in a hospital setting or by a nurse or doctor. The Clinitest reagent has proven to be more accurate than the Benedict's reagent.


What are the substrates and products of these enzymes urate oxidase glycolate oxidase and diamino oxidase?

i ave no idea wot d answer is


Is coryne bacterium is oxidase positive?

no.coryne bacterium is oxidase negative.


What is tollen's reagent and baeyer's reagent?

tollen's reagent = [Ag(NO)2]+ baeyer's reagent= KMnO4


Equation of formaldehyde schiff's reagent benzaldehyde schiff's reagent and acetone schiff's reagent?

Formaldehyde schiffs reagent Formaldehyde schiffs reagent


What is the specific use of a medium sized reagent bottle?

Your question supplies its own answer, though you may need to ensure the bottle's material will withstand the intended reagent.


How do you calculate the percent yield of an element in a reaction?

The actual yield is given within the worded problem. The theoretical yield however is to be found. In order to calculate the theoretical yield, you need to convert the mass of the limiting reagent (LR) to the mass of the reagent in excess (ER). To find the limiting reagent, you need to first convert the mass of the limiting reagent to the mass of the reagent in excess (to find the theoretical yield)A. Convert mass of limiting reagent to mass reagent in excess (mass --> mass); in other words, find the mass of the reagent consumed.1. Multiply the mass of the limiting reagent by the # molecules of the reagent in excess and its molar mass.2. Divide the above by the # of molecules LR which is multiplied by its molar mass.Mass LR x # molecules ER x molar mass ER-- # molecules LR x molar mass LR3. Subtract the original mass of reagent in excess and the consumed reagent in excess.Original mass Reagent in Excess - Consumed Reagent in Excess= Reagent leftover/unused (theoretical yield).B. Find the percent yield of the product.--- Actual YieldTheoretical Yield x 100%