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 short term complications, Q. Explain Short term complications? ...

Q. Explain Short term complications? Short term complications may arise due to GERD which may in turn increase the frequency or severity of this disease. One of the complicatio

Cyanotic heart disease, Cyanotic Heart Disease In  this there is a com...

Cyanotic Heart Disease In  this there is a communication between Pulmonary and systemic circulation through which venous blood enters the systemic circulatory system. The infa

What is the indolacetic acid (iaa), What is the indolacetic acid (IAA)? ...

What is the indolacetic acid (IAA)? IAA or Indolacetic acid (indolyl-3-acetic acid) is the major natural auxin made by plants. It promotes plant growth and cellular differentia

How you would dispose off sharps and needles, Q. How you would dispose off ...

Q. How you would dispose off sharps and needles? Used needles should not be bent or broken prior to disposal. Unsheathed needles are placed directly into the designated, punctu

How to follow a cell through the cell cycle, Follow a cell through the cell...

Follow a cell through the cell cycle. How many copies of each gene are present at each stage?

Operatory preparation in sterilization process, Q. Operatory Preparation in...

Q. Operatory Preparation in sterilization process? 1. The circulator (non-sterile assistant) should begin to prepare the operatory while the sterile assistant scrubs. If there

Structure of the sperm, Structure of the Sperm The spermatozoa in dif...

Structure of the Sperm The spermatozoa in different animal groups display a wide variety of shapes and sizes but all share a. basic morphological plan. The sperm in most anim

Heteromorphic types - intra specific incompatibility, Heteromorphic Types -...

Heteromorphic Types - Intra specific Incompatibility Plants of the same species produce flowers that differ in morphology. This involves two (distyly) or three (tristyly) morp

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