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

What is the difference between taeniasis and cysticercosis, What is the dif...

What is the difference between taeniasis and cysticercosis? Taeniasis is the parasitic disease caused by the adult tapeworm installed within the human intestine. Cysticercos

Gene mutatiorns, Gene or point mutations occur when the DNA sequence of a g...

Gene or point mutations occur when the DNA sequence of a gene is altered and the new nucleotide sequence is passed on to the offspring. This occurs either due to addition or deleti

Eyeball - sclerotic, SCLEROTI C - White of eye. Outer thick, made u...

SCLEROTI C - White of eye. Outer thick, made up of fibres connective tissue. Protective layer. Give definite shape. Its anterior 1/6 part is thin, transparent known as

What do you mean by canning, Q. What do you mean by Canning? Canning T...

Q. What do you mean by Canning? Canning The term canning is generally applied to foods, more specifically, to the foods preserved by heat processing. It aimgto destroy microo

test the hypothesis , A classic study of extrasensory perception tests the...

A classic study of extrasensory perception tests the ability of one person to read another's mind. The test uses five cards with different designs, all known to both participants.

Effect on microbial growth and ecology, Effect on Microbial Growth and Ecol...

Effect on Microbial Growth and Ecology Redox potential exerts an important selective effect on the microflora of a food since it will decide the type of microorganism that can

Changes in the malarial parasite, The parasite completes a part of its life...

The parasite completes a part of its life histroy in man in two stages. They are : a) Pre-Erythrocytic cycle. b) Erythrocytic cycle. 1. When an infected female Anopheles mosquit

Fossil history of horse, Evolution of Horse - Credit to Prof. C. Marsh...

Evolution of Horse - Credit to Prof. C. Marsh (1879) of Yale University for complete work.   S.No   Fo ssil/Genus   Period

Type one diabetes mellitus, Q. Type one Diabetes Mellitus? Type 1 DM oc...

Q. Type one Diabetes Mellitus? Type 1 DM occurs in children and adolescents (6-14 yrs). In this disease, the body makes little or no insulin. Daily injections of insulin are ne

What is the primary structure of a protein, What is the primary structure o...

What is the primary structure of a protein? What is the significance of the primary structure? The primary protein structure is the linear sequence of amino acids that form the

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