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Suppose a positive Barfoed's test was obtained with sucrose solution suggest and 2-3 sentence explanation
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- Suppose a positive Barfoed's test was obtained with sucrose solution suggest and 1-3 sentence explanationGive one test to show the difference between reducing and non-reducing sugars. (Give the indication of positive test, such as color, precipitate formation, etc.) Is sucrose a reducing or non-reducing sugar? Explain. Is lactose a reducing non reducing sugar? Explain.Show the calculations required to make up 250mlof a stock solution of this chemical that will then be at the working concentration when 1 volume of this solution is added to 10 volumes of cell culture medium.
- An unknown solution contains a single pure sugar. It gives positive results to Molisch’s and Benedict’s tests but is negative for all others. What is the sugar? Is it sucrose, lactose, or xylose? Explain your choice.If four identical test tubes contains same amount of glucose, lactose, starch, and sucrose solution. How to differentiate between them by employing different biochemical tests with proper explanation. Write down the mechanism and observation.Calculate the amount of phycocyanin in Sample x in mg where A620=0.191 and A650=0.093, taking into account the dilution factor which is 100 and the total volume of extract which is 50 Note your answer to 2 decimal places.
- Calculate the amount of phycocyanin in Sample 1 in mg where A620=0.192 and A650=0.090, taking into account the dilution factor (100), and the total volume of extract (45). Note your answer to 2 decimal places.I am not sure how to go about illustrating and answering this question: Use a diagram to illustrate how 10^-4, 10^-6 and 10^-8 dilutions in water of the soil suspension in a final volume of 10 mL will be prepared. There are only three tubes available.Instead of Molisch's test, what specific test can be used to detect the presence of pentose sugar? Write the procedure
- a practical investigation to find the solute potential of rhubarb cells was carried out in this way. suggest a rance of concentration for sucrose solutionIf a sample of beeswax is found to have an acid number of 15.5 and saponification value of 71.2, the ester value of the sample is:True or False Galactose gives a positive result with Benedict’s test faster than lactose due to the acidity of the reagent used.