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 the secretary phase - menstrual cycle, Explain the Secretary Phase ...

Explain the Secretary Phase - Menstrual Cycle After ovulation, the lining of ovarian follicle is stimulated by LH to develop corpus luteum which produces progesterone. The endo

Cells, true or false. the law of entropy says that all energy is ultimately...

true or false. the law of entropy says that all energy is ultimately derived from the sun

Nursing assessment of thalassemia patient, Nursing Assessment  If you ...

Nursing Assessment  If you observe a child of thalassemia major you can identify the following clinical  manifestations:  Anaemia with haemoglobin level of 3 to 8 gm per ce

Checker board (punnet''s square) method, CHECKER BOARD (PUNNET'S SQUARE) ME...

CHECKER BOARD (PUNNET'S SQUARE) METHOD 1.         If the genotypes of the parents are known, the genotypes of their offspring can be easily predicted with the help of a chart c

Inferior alveolar nerve, Inferior alveolar nerve Inferior alveolar ner...

Inferior alveolar nerve Inferior alveolar nerve repositioning to facilitate the placement of endosseous implants posterior to mental foramen is associated with very high incid

Open and closed type of circulatory systems, Open and Closed Type of Circul...

Open and Closed Type of Circulatory Systems There are two categories of circulatory system found in higher metazoans. In one type the original blastocoel carries on to be the

Define classification of functions of minerals, Define Classification of fu...

Define Classification of functions of minerals?  The varied functions of minerals can be grouped under four general physiologic roles viz. Structural: They form an integ

What are antibodies, Question 1 Write a short note on the following- ...

Question 1 Write a short note on the following- Theory of clonal selection Interferons Super antigens Helper T cells Auto immunity Active Immunization

Explain the evaluation of the perimplant marginal tissues, Explain the Eval...

Explain the Evaluation of the Perimplant Marginal Tissues This is to be followed by Evaluation of the Perimplant Marginal Tissues: This includes the following parameters: 1)

Name two features of eukaryotic cells, How are the organelles of a single c...

How are the organelles of a single cell like the organs of a multicellular organism? Name two features of eukaryotic cells that prokaryotic cells lack.

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