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

Why alkaline phosphatases use water as a second substrate, Alkaline Phospha...

Alkaline Phosphatases use water as a second substrate. Why do we still treat their kinetics as if they were for a single-substrate reaction?

Biogeography, Biogeography : This is the distribution of organisms in vario...

Biogeography : This is the distribution of organisms in various parts of the earth. Over periods of ecological changes, biogeography contains the study of plant or animal species i

Explain the failure to management of ledge, Explain the Failure to Manageme...

Explain the Failure to Management of Ledge Apical transportation or perforation: movement of the physiological foramen to a new iatrogenic location. Three types of apical tr

Major renal processes that combined produce urine, Q. What are the three ma...

Q. What are the three major renal processes that combined produce urine? Urine is made by the occurrence of three processes in the nephron that are tubular resorption, glomerul

Terrestrial and aquatic ecosystem, Terrestrial and Aquatic Ecosystem W...

Terrestrial and Aquatic Ecosystem What is common between a terrestrial and an aquatic ecosystem. Both have similar type of trophic structure. They possess an autotrophic layer

What is the concept of mesonephric, What is the concept of Mesonephric? ...

What is the concept of Mesonephric? Replaces the pronephros during development and is retained as functional kidney in adult fish and amphibians. Formed posterior to pronephros

Vitamins and minerals requirement in chronic diarrhoea, Q. Vitamins and min...

Q. Vitamins and minerals requirement in chronic diarrhoea? Loss of vitamins is related to the degree of mucosal damage in chronic diarrhoea, which in turn impairs absorption an

Identification and care of taxonomic collections, Q. Identification and Car...

Q. Identification and Care of Taxonomic collections? Collection of plant specimens is essential for taxconomic research. Herbarium specimens become a permanent record. Select t

Explain Objectives of root-end resection apicoectomy, Explain Objectives of...

Explain Objectives of Root-End Resection Apicoectomy a) Removal of untreated apical portion of the root, b) Enable the obturator to determine the cause of failure,  c) To

Estrus - estrous cycle, Estrus - Estrous cycle This is the period of h...

Estrus - Estrous cycle This is the period of heat, and copulation is permitted only at this time. This condition lasts from 9 to 15 hours and is characterised by a high rate o

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