Define observation or inference for picric acid test, Biology

Assignment Help:

Define observation or inference for picric acid test?

1. A mahogany red colour will be seen. The mahogany red colour indicates the presence of reducing sugar. All monosaccharides are reducing sugars and thus will give a positive picric acid test.

2. Maltose and lactose contain a free sugar group and thus can reduce picric acid in alkaline medium. Sucrose does not give this test as it does not have a free sugar group.

3. Starch with very few free sugar groups cannot reduce picric acid. Dextrin being a less complex molecule brings about partial reduction.


Related Discussions:- Define observation or inference for picric acid test

Clinical applications of pharmacogenetic tests, Problem 1: "Structural ...

Problem 1: "Structural Genomics aims at determination of the 3D structure of all proteins". Describe with techniques Show genomic techniques for determination of 3D struc

Adaptive mechanisms, The adaptive mechanisms may be short term ones which c...

The adaptive mechanisms may be short term ones which come into play within minutes or hours of the onset of myocardial dysfunction. These are: Frank-Starling Mechanism In

Draw a diagram of external view of a human brain, Draw a diagram of externa...

Draw a diagram of external view of a human brain. Label:- frontal lobe, temporal lobe, occipital lobe and cerebellum.

Proteins of animal origin - egg, Proteins of Animal Origin - Egg Eggs: ...

Proteins of Animal Origin - Egg Eggs:  Roughly, the chicken egg consists of 11% shell, 31% yolk and 58% white. Liquid whole egg consists of 65% white and 35% yolk. The primary

hypotheses testing, Celia is a nurse in a geriatric ward.  She noticed tha...

Celia is a nurse in a geriatric ward.  She noticed that older persons in her care are having problems sleeping at night.  She decided to introduce non-pharmocologic ways of relaxat

Why do cells of the nephron tubules present, Why do cells of the nephron tu...

Why do cells of the nephron tubules present a great amount of mitochondria? The cells of the tubule wall have high number of mitochondria because lots of substances are resorbe

Precautions for determination of iodine number of lipids, Precautions for d...

Precautions for determination of iodine number of lipids? 1. If using the pipette for transferring the oil, allow the pipette to drain slowly and completely, as oil takes time

What is fixism, What is fixism? Fixism is the theory about the diversit...

What is fixism? Fixism is the theory about the diversity of life on earth that affirms that the current existent species were identical to species of the past and came out alre

VIRUSES, WHAT IS THE TYPICAL REPRODUCTION CYCLE OF A DNA VIRUS

WHAT IS THE TYPICAL REPRODUCTION CYCLE OF A DNA VIRUS

Compound feed prepration, Compound feed prepration The compounding of anim...

Compound feed prepration The compounding of animal feed involves processing and blending of raw feed ingredients of wide ranging physical, chemical and nutritional composition int

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