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

Define feeding and nutritional management of spinal trauma, Define the Feed...

Define the Feeding and Nutritional Management of spinal trauma? The main objectives of nutritional management are to meet the nutritional needs of the initial acute phase and

Ecology, Benefits of energy pyramids

Benefits of energy pyramids

Biological species concept, Q. Biological species concept? A biological...

Q. Biological species concept? A biological species as defined by Ernst Mayr are "groups of actually or potentially interbreeding natural populations which are reproductively

What is katal, What is katal katal : the amount of  enzyme that  tran...

What is katal katal : the amount of  enzyme that  transforms  1 mol  of substrate into product in one second.

Explain the management of middle - third perforation, Explain the Managemen...

Explain the Management of Middle - Third Perforation Same to coronal one-third perforation, except defects located more deeper from the access cavity. For successfully

From which structures is the nuclear membrane composed, Eukaryotic cells ha...

Eukaryotic cells have nucleus delimited by two juxtaposed membranes that start with the membrane of the endoplasmic reticulum. The nuclear membrane, or karyotheca, represents pores

Are hormones only proteins, Q. Are hormones only proteins? Some hormone...

Q. Are hormones only proteins? Some hormones are proteins, like glucagon, insulin and ADH others are derived from proteins (modified amino acids) like noradrenaline and adrenal

Embyonic development, What are the different patterns of cleavage (segmenta...

What are the different patterns of cleavage (segmentation of fertilized egg cell)?

Genetics, The involuntary muscle movement is also genetical sk question #M...

The involuntary muscle movement is also genetical sk question #Minimum 100 words accepted#

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