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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.
Middle piece - Structure of the Sperm Just behind the head, the small constriction (neck) carries a distal and a proximal centriole. The two lie at right angle to each other.
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how is biotechnology useful?
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Why does oxygen concentration in the blood decrease during exercise? Why does carbon dioxide concentration in the blood change during exercise?
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