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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.
Define measuring body composition- Multiple isotope Dilution? Multiple isotope dilution (Total and extracellular body water): It is based on the principle that certain substanc
Q. Describe Ecosystem Diversity? Ecosystem diversity means the variation between different types of ecosystems. Different species of animals, plants and micro-organisms interac
Define Functional Role of Sugars in Food? From the consumer's point of view, sugars are basically related with sweetness. Sweetness is essentially a physiological sensation. Th
Explain Eicosanoids Eicosanoids are the local hormones formed by body tissues during self-healing responses to stimuli. Eicosanoids are a family of compounds deriv
Transport in Phloem The basic necessities of plants, water, are taken up by the roots. Another purpose served by the roots is to absorb water soluble mineral nutrients from th
In general what are the reagents and products of fermentation? In fermentation glucose (sugar) is degraded into pyruvic acid (every glucose molecule forms two pyruvic acid mole
define the pattern of cleavage i all aspects
Explain about the Waist to Hip Ratio (WHR)? Two individuals who have the same BMI and the same total body fat may have different abdominal fat mass. Abdominal fat accumulation
Histone methyl transferases (HMTs) having a protein domain called SET. This domain is responsible to adding methyl groups to histones. Which of the following is a false statement r
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