USES A MAGNETIC FIELD TO ORIENT THE POSITION OF CERTAIN NUCLEI IN THE BODY. THE PRIMARY NUCLEI USED FOR MRI IMAGING IS IN THE HYDROGEN ATOM CALLED THE PROTON. AS THE BODY IS MADE UP OF 75% OF WATER AND WATER IS 2 PARTS HYDROGEN. MAKING THR NUCLEUS OF THE HDROGEN ATOM, THE PROTON, THE MOST ABUNDANT IN THE BODY. A RADIOWAVE IS THEN USED TO EXCITE THE PROTON WHICH RESONATE AND ADMIT VARYING SIGNALS WICH A RECEIVED, DIGITIZED AND DISPLAYED AS IMAGES. DIFFERENT SIGNALS BY DIFFERENT BODY TISSUES ARE THEN USED
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addition to diagnostic medicine. The patient lies on a patient table then slides into the cylinder and placed in a magnetic field gradient. When operated, protons are tiny particles that are present in water molecules in the body and protons aligned in parallel to the powerful magnetic field. Radio waves are transmitted in pulses and these protons are echoed along the body. When the MRI machine is scanning, the MRI scanner receives the echoes and it will construct a clear and detailed image of soft
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divided by solvent ATOMIC STRUCTURE: Plum Pudding- Thompson Thomson’s "Plum Pudding Model" each atom was a sphere filled with a positively charged fluid Rutherford-Proton predicted Neutron Chadwick-Neutron (No Charge hard to find) Mass proton and electron-1 Neutron-0 Mass number- Protons and Neutrons Atomic Number-Protons OR Electrons Isotope-A molecule with more than one type of atom Element-A substance which contains one type of atom Electronic configuration: 2,8,8,8,8,8 Ionic
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You better look up theory and see what it means, the concept of God or Godhood is a theory, "A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world. The theory of biological evolution is more than "just a theory." It is as factual an explanation of the universe as the atomic theory
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Hypothesis 4. Test 5. Result 6. Conclusion 2. Properties of Living Things 1. Highly ordered 2. Use energy/source of energy 3. Genetic Information 4. Cells 5. Reproductive 3. pH and what pH values represent? 1. pH is negative concentration of protons in solutions 2. 0-7 Acidic (Increase concentration) 3. 7-14 Basic/Alkaline (Decrease concentration) 4. ORGANISMS ARE VERY SENSITIVE TO pH 5. Disrupt protien structure 6. Shut down important chemical reactions 7. Break down chemical membranes
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There are five scientists who helped shape not only atomic theory but also our perspective of the atom. Dalton, Bohr, Rutherford, Planck, and Millikan, each of these scientists contributed to atomic theory in their own way and enhanced our knowledge of the atom. John Dalton is known for his work of gas laws (i.e. Dalton’s law) but also his work to lay the ground work for atomic theory. In the year 1800 Dalton presented a paper which was on the constitution of mixed gasses. This would lead him to
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heliosphere is an area dominated by the sun. Here, protons and electrons are released at extremely high speeds. Previously, NASA has tried to develop a spacecraft propulsion system using sheer power, but now it might be possible to make one without propellants at all. To do this, the agency will need to harness these 400-750 kilometers per second wind speeds. Like a sailboat for space, the system will use an E-Sail that takes advantage of theses protons released from the sun in order to propel the spacecraft
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on heating which quickly vaporizes D. It decomposes to form two or more gases on heating 2. Which of the following is NOT true for an atom? A. The number of protons and electrons are always equal B. The protons and neutrons are found in the nucleus C. The numbers of protons always equals the numbers of neutrons D. The electrons are found in the shells surrounding the nucleus 3. During the manufacture of ethanol, the ethanol is separated from
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element is defined by the number of protons in its nucleus a. The physical and chemical properties of each element are defined by: i. Number of protons and neutrons in the nucleus ii. Number of electrons orbiting the nucleus Proton = mass of one & a positive charge Neutron = mass of one and no charge Electron = negligible mass and a negative charge Isotopes of an element a) Isotopes are different forms of the same element a. Same number of protons b. Same number of electrons orbiting
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Metabolism III: Oxidative Cellular Respiration Introduction Oxidative cellular respiration is composed of series metabolic processes that convert broken down food molecules into usable energy in the form of adenosine tri-phosphate (ATP). The process follows oxidation (catabolic) and reduction (anabolic) pathways. Processes involved are glycolysis, Krebs or tricarboxylic acid (TCA) cycle, and the electron transport chain. One step in the TCA cycle is the enzyme-catalyzed conversion of succinate
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