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 type of digestion that occurs in cnidarians, What is the type o...

What is the type of digestion that occurs in cnidarians? These animals have a digestive cavity and they make intracellular and extracellular digestion. The extracellular digest

Regulation of breathing and blood pressure, Q. Which is the brain region re...

Q. Which is the brain region responsible for the regulation of breathing and blood pressure? The neural regulation of breathing, blood pressure and other physiological paramete

Variability in populations, Variability refers to the differences in herita...

Variability refers to the differences in heritable traits exhibited by the individuals of a species. One of the major contributions of Darwin to the study of evolution was his book

Define muscular endurance component for physical fitness, Define Muscular e...

Define Muscular endurance component for physical fitness? It is the ability of a muscle, or a group of muscles to sustain repeated contractions or to continue applying force ag

Leptospirosis, L e p t o s p i r o s i s It is zoonotic dis...

L e p t o s p i r o s i s It is zoonotic disease characterized by interstitial nephritis, haemolytic anaemia and abortions. E t iology : The disease i

Define nutrition counseling - management of eating disorders, Define Nutrit...

Define Nutrition Counseling - Management of Eating Disorders? Nutrition counseling can be used to accomplish a variety of goals, such as reducing behaviours related to the eati

Excretory system, what is the excretory organ in protozoa?

what is the excretory organ in protozoa?

Brucellosis, Br u c e ll osi s It is also called as Bang's diseas...

Br u c e ll osi s It is also called as Bang's disease or contagious abortion as it causes abortion in late pregnancy and infertility. E t iology: It is cause

Zooology, green gland is excretory organ of which ortopodic phylem

green gland is excretory organ of which ortopodic phylem

Karyotype, KA R YOTYPE External morphology of Chromosomes specific...

KA R YOTYPE External morphology of Chromosomes specific for each species of living organisms. Karyotype can be studied in metaphase of mitosis. Karyotype includes th

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