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

Discuss briefly the color reactions of proteins, Question 1 List variou...

Question 1 List various methods used for determination of blood glucose. Explain the principle of each test. Add a note on advantages and disadvantages of each method Qu

Role of protein in metabolism, ROL E OF PROTEIN - Main organic comp...

ROL E OF PROTEIN - Main organic component of body. Unit is amino acid. Polymer of amino acids. Amino acids combine to each other by peptide bond. Formation of bone, t

How is a prototype drug different from other drugs, How is a prototype drug...

How is a prototype drug different from other drugs in the same class?

How do arthropods grow, Q. How do arthropods grow? Due to the presence ...

Q. How do arthropods grow? Due to the presence of exoskeleton the growth of an arthropod is periodical during the growth period the animal loses the exoskeleton, develops and g

Heat loss, Heat Loss Temperature regulation is extremely uneconomical...

Heat Loss Temperature regulation is extremely uneconomical if it depends only on variations in metabolism. Therefore, mechanisms for losing excess heat have been developed by

List what organelle is responsible, List what organelle is responsible for ...

List what organelle is responsible for each of these cellular functions. -production of energy (ATP) for the cell -synthesizing proteins -cellular digestion.

Conventional cabg on cardiopulmonary bypass, Conventional CABG on Cardiopul...

Conventional CABG on Cardiopulmonary Bypass   Chest is opened by midline incision and median sternotomy. Simultaneously saphenous vein or radial artery is harvested. 'T

Elaborate evolution by natural selection , Elaborate Evolution by Natural S...

Elaborate Evolution by Natural Selection ? The conelaboratecept of natural selection lies at the heart of Darwin's Theory of Evolution. Darwin understood that plants and animal

Eye lens, LEN S -  In lumen of eye ball, a large colourless, transp...

LEN S -  In lumen of eye ball, a large colourless, transparent, more convex on back side, lens present covered by lens capsule. When white tissues are formed in it, it b

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