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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.
Stems transport liquids (a) Cut about 2 cm from the end of stems of celery and place them in cold water for about an hour to freshen. Next place the stems in dishes having red
Neurological symptoms and signs occur in 30 to 40 per cent of patients with IE, are more frequent when IE is caused by S. aureus, and are associated with increased mortality rates.
Where in eukaryotic cells does mRNA synthesis occur? To where do these molecules migrate?
It is a neural mechanism that plays a role in encoding of new information. Encoding takes place as a result of changes in the strength of synapses among neurons in neuronal network
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If I take a drug that induced the synthesis of CYP 2E1 in my system, would that raise or lower my blood alcohol level after I drink a beer or wine (compared to if I hadn''t taken t
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A plant grown from one of Mendel's yellow pea is selfed. Three progeny peas from this are obtained and they are all green. Is the original plant homozygous or heterozygous, and wha
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