Observation or inference for half and full saturation test, Biology

Assignment Help:

Define Observation or Inference for half and full saturation Test?

1. Starch is precipitated by half saturation with ammonium sulfate whereas dextrin is not precipitated. This test can be used to detect dextrin.

2. Starch and dextrin are both precipitated with ammonium sulfate. When colloids are dissolved in water, they get hydrated with water. A salt like ammonium sulfate has greater affinity for water and hence on addition to a solution of colloid, it precipitates the colloid from solution. The degree of hydration is proportional to the surface area of the colloid, which in turn is inversely proportional to the size of the colloidal molecule. Thus, starch being a larger molecule compared to dextrin, is precipitated even by half saturation with ammounium sulfate while dextrin is precipitated only when fully saturated with ammounium sulfate.

 


Related Discussions:- Observation or inference for half and full saturation test

Explain endocarditis, Explain Endocarditis The risk of endocarditis is ...

Explain Endocarditis The risk of endocarditis is considered high in patients with last bacterial endocarditis, prosthetic heart valves, complex cyanotic congenital heart diseas

Steroids, STEROID S - These are derived lipids. Cholesterol is m...

STEROID S - These are derived lipids. Cholesterol is must in formation of steroid hormones. In steroids cyclopentanoperhydrophenentherene nucleus ring present. S

Pre-mating isolating mechanisms, We mentioned earlier that pre-mating mecha...

We mentioned earlier that pre-mating mechanisms are concerned with the prevention of occurrence of interspecific crosses. In such cases, a) the potential mates do not meet in wh

Virus, whats ur clear definition of virus

whats ur clear definition of virus

Vitamins arid minerals in postoperative nutritional care, Define needs of V...

Define needs of Vitamins arid Minerals in Postoperative Nutritional Care? Vitamins are required for wound healing after a surgery. Vitamin C provides the cementing material of

Fluid management in diarrhoea, Q. Fluid management in Diarrhoea? Fluid ...

Q. Fluid management in Diarrhoea? Fluid management: The key to diarrhoea management is the early replacement of fluid lost in the stools through intravenous or oral route. Whil

Growth and development of plants, Growth and Development of Plants You...

Growth and Development of Plants You must have seen beautiful plants growing in pots in a garden. The plant grows while the pot does not. As a rule living things grow, but non

Ilustrate the nutritional and functional role of sodium, Minerals  :-  Sodi...

Minerals  :-  Sodium Food Source      NaCl, MSG, other food additives, milk, low in most raw foods Nutritional Functional role Essential nutrient: Deficiency is ra

Agro industrial-proteins, Proteins Protease inhibitors: Protease inh...

Proteins Protease inhibitors: Protease inhibitors are protein-based substances widely distributed within the plant kingdom, including the seeds of most cultivated legumes wh

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