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Explain the Bohr's model?
Bohr's Model : Electrons move around the nucleus at tremendous speeds and occupy most of the space in an atom. The exact position or location of an electron at any given moment can only be predicted on the basis of probability. In a widely accepted model of the atom originally proposed by Neils Bohr, electrons move in spherical spaces called orbitals, or shells, which correspond to different energy levels. Electrons are distributed according to their energy levels, with the higher energy electrons residing in the outer shells. The innermost shell contains only 2 electrons. In common elements, the next outer shells contain 8 electrons each.
Atoms either gain, lose, or share electrons in the outer shells. Because the outer shells of many atoms are incomplete, most atoms will interact with other atoms during chemical reactions to achieve stable outer shells. The number of electrons that an atom must either gain, lose, or share to complete the outer shell is known as its valence, or oxidation number. For example, carbon has six electrons, two in its first energy level and four in the outer level. Thus, it can form a stable outer shell by gaining, losing, or sharing four electrons to complete its outer shell when it joins, or bonds, with another atom or atoms to form a compound. The following table lists the oxidation numbers of some important ions frequently used in Biology.
Explain about the Biuret Method? The Biuret reaction was one of first colorimetric assays developed for protein estimation. It is most often used in applications requiring a fa
CEL L BODY (= CYTON OR SOMA) OR PERIKARYON - It is nucleated & broader part of neuron. It may be up to 13.5 mm in diameter and may be irregular, spherical, oval, rounded
Annelids - Regeneration in Invertebrates Between the segmented worms both the polychaetes and oligochaetes have remarkable powers of regeneration. Leeches totally lack this ca
Define a liquid diet A liquid diet is the one which having of foods that can be served in liquid or strained forms at room temperature. These are usually prescribed after certa
Nature of viral diseases Viral diseases are manifested in acute, sub-acute or chronic forms, as frank clinical cases or as latent infections, some of which are fatal. These di
What are the synthetic auxins and what are their uses? The Synthetic auxins like naphthalenic acid (NAA) and indolebutyric acid (IBA) are substances similar to IAA (a natural a
Explain the energy flow of ecology? Energy flow: As you can see, energy flow is one way in an ecosystem. Energy is not recycled. The ultimate source of energy that powers eco
I need the parts of the structure carbon. Include elements,monomer,polymer, and any sub units
Explain Results of abdominal aneurysm surgery? Results: For ascending aorta replacement, the hospital mortality varies from 0 to 9 per cent. Aortic arch has higher risk of
TYPE S - There are present three types of muscle fibres: 1. Striped or striated or skeletal or voluntary muscles. 2. Unstriped or non-striated o
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