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Explain the Scanning Electron Microscope
It can be used to observe intact cells or cell components directly. Then sections are not necessary. It is used for visualizing surface characteristics rather than intracellular structures. A narrow beam of electrons scan back and forth, producing a three-dimensional image as electrons are reflected off the specimen's surface.
Though a variety of optical instruments are available for routine laboratory work, compound bright field microscope is the one commonly found in all biological laboratories. Let us get to know the different parts of this microscope.
Poriferans and cnidarians do not have excretory systems. Do platyhelminthes have an excretory system? Platyhelminthes have a primitive excretory system made of flame cells (als
How is the chromosome region where the centromere is located called? How are chromosomes classified in relation to the position of their centromere? The chromosome region where
Petrol or gasoline can be synthesized by following three methods: 1. Polymerisation 2. Fischer - tropsch method 3. Bergius process polymerisation In
The Word 'disaster' is believed to be originating from the French word 'Disastre' which is a combination of two words 'des' meaning bad and 'astre' meaning star. Thus this term ref
Describe Valvular PS Murmur and their characterstics? Characteristic: Harsh crescendo-decrescendo murmur along the left sternal border and loudest at pulmonary area, conducted
What are the four characteristics that all chordates have at some stage of their lifecycle ?
Define the Food Pricing? The pricing of the food products bought by the consumer is subject to multifarious factors. Each of the factors as discussed below can affect the prici
Q. Complications of Diabetes? Diabetes, as you know, is a lifelong disease. We have said earlier also that it can be controlled but not cured. Control of diabetes by ensuring n
What are the advantages of ecological pyramids?
(a) Name the condition and (b) describe the effects of the failure of the pancreas to produce sufficient-insulin. (c) How is this condition treated? .
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