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

Strawberry slain - common disorders of skin, Strawberry Slain: It  sig...

Strawberry Slain: It  signfies the dilatation  of deeper vessels  to form  cavernous spaces like those seen  in  the erectile tissue of the penis. The  lesion  is well-defined

How can amine groups be classified, How can amine groups be classified? ...

How can amine groups be classified? Amines can be classify into primary amines, those to which one -R (variable radical) is attached to a -NH2, secondary amines, those where on

Find the magnitude and the direction of his initial velocity, After leaving...

After leaving the end of a ski ramp, a ski jumper lands downhill at a point that is displaced 66.2 m horizontally from the end of the ramp. His velocity, just before landing, is 18

Respiration, explain the 4 stages of aerobic respiration

explain the 4 stages of aerobic respiration

What is risk, What is Risk  Risk  :  A function of the probability o...

What is Risk  Risk  :  A function of the probability of an adverse effect and  the magnitude of that  effect,  consequential to hazard(s)  in food.

Indication in circulatory assist devices, Indication :  IABP is commonly u...

Indication :  IABP is commonly used to supporting failing left ventricle after open-I1ca1-t surgery or in cardiogenic shock after myocardial infarction. It is at times used in uns

Phases of the cardiac cycle, The phases of the cardiac cycle are: 1)  At...

The phases of the cardiac cycle are: 1)  Atrial Systole This begins with the P-wave of the ECG. The atrio-ventricular valves are open and the ventricles are relaxed (diastole

Show symptoms of dyspepsia, Q. Show Symptoms of Dyspepsia? The symptoms...

Q. Show Symptoms of Dyspepsia? The symptoms are heartburn, upper abdominal discomfort (often food-related) indigestion, bloating, fullness, nausea and anorexia. Such symptoms c

Will sedantary lifestyle increased risk for cad, Q. Will Sedantary Lifestyl...

Q. Will Sedantary Lifestyle increased risk for CAD? A sedantary life style is associated with increased risk for CAD. Sedentary persons have almost double the risk for CAD deat

Ecological adaptations in animals to desert environment, Ecological adaptat...

Ecological adaptations in animals to desert environment In response to scarcity of water, animats adcipt vario6s strategies to conserve or prevent loss of water. Most of the de

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