Define principle of fehling test - reduction tests, Biology

Assignment Help:

Define Principle of fehling test - reduction tests?

Sugars that possess a free or potentially free (those that can be converted to free) aldehyde or ketonic group have a property of easily reducing metal ions such as copper, iron, mercury, bismuth etc. The alkali from Fehling's reagent acts on sugar molecules and converts them to enediols. These enediols are unstable and highly reactive and thus reduce cupric ions to cuprous ions. These cuprous ions combine with the hydroxyl ions to form cuprous hydroxide, which, on heating, forms a red precipitate of cuprous oxide.


Related Discussions:- Define principle of fehling test - reduction tests

What are nutritional issues related to neurological disorder, What are nutr...

What are nutritional issues related to neurological disorders? Nutritional management of the patients with neurological disease is complex, as mechanisms and abilities needed f

Measures to control of noise pollution, 1.      Noise producing industries,...

1.      Noise producing industries, railway stations, and aerodromes should be located away from the residential areas. 2.      Check on the traffic in the residential colonies.

Do all the eukaryotic cells, Q. Do all the eukaryotic cells have nucleus an...

Q. Do all the eukaryotic cells have nucleus and/or only one nucleus? There are eukaryotic cells devoid of a nucleus and others with more than one nucleus. Osteoclasts, the cell

Determine the prevention of cholera, Determine the prevention of Cholera ...

Determine the prevention of Cholera Prevention:  Following recommendations are  there to prevent cholera  outbreak: Drink only water that you have boiled or treated with

Dilute this concentration of cells to yield 300 cells, For a particular ass...

For a particular assay, you require cells at a concentration of 300 cells per ml. In your flask of cells growing you counted a sample using a hemacytometer and found that you have

Heart output, HEAR T OUTPUT The amount of blood pumped by heart per...

HEAR T OUTPUT The amount of blood pumped by heart per minute. Heart beat is 72. Pump out blood is 70 ml. This 72 × 70 = 5040 ml. ( 5 litres) blood is pumped in a minute.

Construct cdna samples, Once you have identified a few relevant mRNA specie...

Once you have identified a few relevant mRNA species, you wish to more closely examine their messages by sequencing. You do not have the time to search the genome and isolate the D

Metabolism, METABOLISM  - Word given by Shwann . It includes bio-ch...

METABOLISM  - Word given by Shwann . It includes bio-chemical reactions occur in body may be constructive or destructive. It includes -                         Anabo

Theory of evolution, Evolution: This deals with the origin of newer types o...

Evolution: This deals with the origin of newer types of organism from the previous ones by modification involving genetic changes and adaptations. Evolution also called as biologic

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd