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 surgery process for head and neck tumor, Define Surgery Process for...

Define Surgery Process for Head and Neck Tumor? Treatment mostly involves combination of surgery and radiation. Chemotherapy is also used in some cases, we will learn about the

Bomb calorimeter, Normal 0 false false false EN-IN X-...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Blood protozoan and ricketsial diseases - trypanosomiasis, B l oo d Prot...

B l oo d Protozoan and Ricketsial Diseases T r y p a n o s o m i a si s It is also known as surra in equines and tibarsa in camel and results in intermitte

Conditions do most seeds need in order to begin germination, a) What condit...

a) What conditions do most seeds need in order to begin germination?  b) What other condition do the seedlings need to continue growth to mature plants?   a) Most seed

How sugar is used in icings, How sugar is used in Icings? Sugars provid...

How sugar is used in Icings? Sugars provide sweetness, flavor, bulk and structure to icings and frostings. In addition to sweetness and flavor, icings also function as a barrie

Explain the sinus perforations, Sinus Perforations  The maxillary antru...

Sinus Perforations  The maxillary antrum can sometimes be inadvertently penetrated. Through careful pre-operative planning using radiographs, including axial scans, this compli

Formation of gemmules, Formation of Gemmules Throughout the formation...

Formation of Gemmules Throughout the formation of gemmules, masses of food - laden amoebocytes called archaeocytes feed on other cells and lay down in within them. They get s

Counselling diabetic travellers, Counselling Diabetic Travellers The c...

Counselling Diabetic Travellers The counsellor needs to educate a diabetic patient and /or his family members to following issues when such patients plan to travel: ·  Plan

Procedures for diagnosis - advanced vaccine technology, A d v a ...

A d v a nce d vaccine technology: Genetic engineering technology is the major scientific revolution of 20th Century. This has helped in developing vaccine

Hyperthyroidism (graves disease), Hyperthyroidism (Graves Disease): Gr...

Hyperthyroidism (Graves Disease): Graves diseases is  the most common cause of hyperthyroidism  in  children and is usually associated with an  enlarged thyroid gland and exop

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