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

What are the digestive functions of the liver, Q. What are the digestive fu...

Q. What are the digestive functions of the liver? The liver has other digestive functions, besides making bile for release in the duodenum. The venous network that absorbs n

Atp molecules are produced for each glucose molecule, How many ATP molecule...

How many ATP molecules are produced for each glucose molecule used in fermentation? How many ATP molecules are produced for each glucose molecule used in aerobic respiration? I

What is mucic acid test and its principle, What is Mucic Acid Test and its ...

What is Mucic Acid Test and its principle? This is a specific test for galactose and is given by galactose as well as lactose, which is made up of galactose and glucose. Pr

Respiration, what is the organ of respiration in snaks

what is the organ of respiration in snaks

What is the average duration of each stage in hours, A biologist examines a...

A biologist examines a series of cells and counts 140 cells in interphase, 10 cells in metaphase, 4 cells in anaphase and 7 cells in telophase. if complete cell cycle requires 24 h

Forestry, Forestry : It concerned with protection or development of forest ...

Forestry : It concerned with protection or development of forest and to explore the outcome or economic potential of forest. Forestry is the art or science of tree resources, inclu

What is the spontaneous generation hypothesis, What is the spontaneous gene...

What is the spontaneous generation hypothesis? The impulsive generation abiogenesis or hypothesys asserts that life on earth has come from nonliving material. For instance, t

Explain pyruvate kinase, Pyruvate kinase catalyzes the third irreversible m...

Pyruvate kinase catalyzes the third irreversible move in glycolysis.  It is activated by fructose 1, 6-bisphosphate.  The ATP and amino acid alanine allosterically inhibit the enzy

Explain the main steps in the mongoose bioassay, Question : Explain the...

Question : Explain the main steps in the mongoose bioassay and the mouse bioassay as conducted for testing ciguatera in Mauritius? (i) Provide a brief description on the beh

What are brief descriptions test hypothesis, What are brief descriptions of...

What are brief descriptions of how you could test hypothesis. or how would you know if your hypothesis is testable?

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