68 278
Assignments Done
99,1%
Successfully Done
In November 2018

Answer to Question #14698 in Biochemistry for noran

Question #14698
simple methodology to tell which test tube contains which combination of starch,protein or lipids.
material:3 solutions,water bottle,NaOH,KI,CuSO4,Ethanol,test tube & rack,wax pencil,syringe
Expert's answer
In the rack mark tubes for each test solution using wax pencil. Add approximately 2cm (in height) of water to all test tubes. Firstly, you can detect the availability of proteins in an unknown solution with the CuSO4 in the presence of NaOH. In this case, a violet staining will occur.Secondly, the starch detection in the solution is based on the reaction with KI. In the presence of starch the mixture will have form violet to black color.
Finally, lipid containing is tested by adding ethanol using a syring. Lipids are almost insoluble in ethanol. Therefore the drops of the added ethanol to the test solution will look still as the drops on the surface of the solution with the lipids.

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be first!

Leave a comment

Ask Your question

Submit
Privacy policy Terms and Conditions