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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.
Define Various Methods of Food Processing? In this unit, you studied the various methods of food processing. You learnt that food being most vital for the survival of human bei
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Define r and K Strategists? Ecologists have identified two major types of reproductive strategies among species. Characteristic patterns can be seen among species relating the
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A 48-year-old male patient, who normally enjoys good health, has been admitted to the hospital for the treatment of polycythemia vera. The nurse who is providing care for the patie
What are the main respective constituents of cell walls in bacteria, protists, fungi and plants? In bacteria the cell wall is made of peptidoglycans; between protists algae hav
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Define the Bioavailability of Vitamins? The term bio availability refers to the overall efficiency of utilization, including physiological and biochemical processes involved in
Phylum Tracheophyta Tracheophytes mean vascular plants. Tracheophyta includes ferns, the gymnosperms and the flowering plants. They have appeared some 400 million years ago, an
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