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Amoeba

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Amoeba   THE LIFE OF AN AMOEBA Amoebas are unicellular eukaryotic organisms classified in the Kingdom Protista. Amoebas are amorphous and appear as jelly-like blobs as they move about. These microscopic protozoa move by changing their shape, exhibiting a unique type of crawling motion that has come to be known as amoeboid movement. Amoebas make their homes in salt water and freshwater aquatic environments, soils, and some parasitic amoebas inhabit animals and humans. AMOEBA CLASSIFICATION Amoebas belong to the Domain Eukarya, Kingdom Protista,  Phyllum  Protozoa,  Class  Rhizopoda,  Order  Amoebida, and the  Family  Amoebidae. AMOEBA ANATOMY Amoebas are simple in form consisting of cytoplasm surrounded by a cell membrane. The outer portion of the cytoplasm (ectoplasm) is clear and gel-like, while the inner portion of the cytoplasm (endoplasm) is granular and contains organelles, such as a nuclei, mitochondria, and vacuoles. Some vacuoles digest food, while
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STERIC NUMBER

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Steric number is the number of atoms bonded to a central atom of a molecule plus the number of lone pairs attached to the central atom. The steric number of a molecule is used in VSEPR (valence shell electron pair repulsion) theory to determine the molecular geometry of a molecule.......... read more
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QUANTUM NUMBER

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QUANTUM NUMBER DEFINITION A quantum number is a value that is used when describing the energy levels available to atoms and molecules. An  electron  in an atom or ion has four  quantum numbers to describe its state and yield solutions to the Schrödinger wave equation for the hydrogen atom. There are four quantum numbers: n - principal quantum number - describes the energy level ℓ - azimuthal or angular momentum quantum number - describes the subshell m ℓ  or m - magnetic quantum number - describes the orbital of the subshell m s  or s - spin quantum number - describes the spin........ read more
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Radioactive decay

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Radioactive decay Radioactive decay a the spontaneous process through which an unstable atomic nucleus breaks into smaller, more stable fragments. Have you ever wondered exactly  why  some nuclei decay, while others don't? It's basically a matter of thermodynamics. Every atom seeks to be as stable as possible. In t Radioactive decay occurs because an atom's atomic nucleus isn't stable, due to a mismatch in the numbers of protons and neutrons[/caption] he case of radioactive decay, instability occurs when there is an imbalance in the number of protons and neutrons in the atomic nucleus. Basically, there is too much energy inside the nucleus to hold all the nucleons together. The status of the electrons of an atom doesn't matter for decay, although they, too, have their own way of finding stability. If the nucleus of an atom is unstable, eventually it will break apart to lose at least some of the particles that make it unstable. The original nucleus i
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VACUUM ENERGY

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Vacuum energy is the energy created by empty space by the constant creation and destruction of particles by the quantum fields that fill the universe. Of all of the weird influences of quantum physics, probably one of the strangest is that there's no such thing as a truly "empty space," because these regions are filled will quantum fields that are constantly fluctuating, creating pairs of virtual particles that instantly annihilate each other. This activity generates a background energy, known as the vacuum energy. VACUUM ENERGY AND THE HEISENBERG UNCERTAINTY PRINCIPLE One of the key concepts in quantum mechanics is known as the Heisenberg Uncertainty Principle, which states that in quantum physics certain related physical properties, such as energy and time, can never both be known precisely in a quantum system. The more precisely that you know one of the physical properties, the less precisely you know the other property. Consider what this means fo
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