26
Approx 0.55
read books to find out :P
there isn't really a difference because they're just different ways of saying them example: 30 minute test/you have 30 minutes to take the test
read, recall, and draw concluions
The color change in the methyl red test is most accurate when read immediately because the pH of the solution can change over time due to various factors such as microbial growth or chemical interactions, leading to inaccurate results. Reading it immediately allows for more precise interpretation of the pH level based on the observed color change.
After 15 minutes Between 1 and 2 minutes
After 15 minutes Between 1 and 2 minutes
Yes, Staphylococcus aureus is negative for the methyl red test due to its inability to produce stable acids from glucose fermentation. This distinguishes it from other enteric bacteria that are positive for the methyl red test.
no
For the Indole test, you add Kovac's reagent. For the Methyl Red test, you add Methyl Red indicator. For the Voges-Proskauer test, you add alpha-naphthol and potassium hydroxide. And for the Citrate test, you add Simmons citrate agar.
can methyl-dopa make you test positive for barbituates
after 30 minutes from the administration..
Staphylococcus aureus is typically methyl red negative. Methyl red test is used to determine the ability of an organism to perform mixed-acid fermentation of glucose, with a positive result indicating a significant drop in pH. Staphylococcus aureus is not known to produce enough acid to yield a positive result with the methyl red test.
Staphylococcus epidermidis indole test - negative methyl red - negative voges proskauer test - positive citrate test - no idea
Enterococcus faecalis typically does not produce significant amounts of acid from glucose fermentation, so it usually gives a negative result in the methyl red test, which detects mixed acid fermentation.
Methyl-D-glucopyranoside would not give a positive Tollen test as it is a non-reducing sugar. The Tollen test is used to detect the presence of reducing sugars, which can undergo oxidation and reduce the silver ions in the Tollen's reagent. Non-reducing sugars like methyl-D-glucopyranoside do not have free aldehyde or ketone groups to participate in this reaction.