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Explain the Phase Contrast Microscop?
Unpigmented and unstained living cells can be easily observed by phase contrast microscope. It has a special objective and a condenser that converts slight differences in refractive index and cell density into easily detected variations in light intensity and produce visible image of the structure under study. The image appears dark against a light background. Phase contrast microscopy is used widely to study microbial motility, determining the shape of living cells and detecting microbial structures like inclusion bodies and endospores etc.
Why do you think the mitochondria contain their own DNA (circular) and have a double membrane?
Explain Temperate Deciduous Forests-Taiga and tundra? Temperate deciduous forests are typified by the type of forests predominantly found in the eastern and northeastern Unit
Q. Show the value of embryology? The value of embryology in solving taxonomic problems can be appreciated by studying some specific cases. Amongst the classical examples cited
Name the most important allosteric effector of glycolysis in the liver. Fructose-2,6-bisphosphate is the most important allosteric effector of glycolysis in the liver
What do you understand by the terms retrogradation and gelatinization? The realignment of the amylose and amylopectin and swollen starch granules to form a pocket is termed
What are the basic constituents of the cell membrane? The cell membrane is produced of lipids, proteins and carbohydrates. The membrane lipids are phospholipids, a special t
What is the reason behind the high surface tension of water?
What is reverse osmosis? Give its one application. Which two heart sounds are heard through the stethoscope when placed on the chest? When are these sounds produced respectivel
Q. Why does not a long lasting vaccine against common cold exist yet? Viruses that present a high mutation rate like the virus that causes the common cold escape easily from th
GENETICS 1. The branch genetics started in 1900 after rediscovery of Mendel's work. 2. Gregor Johann Mendel is called Father of genetics. 3. The t
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