Energy - Key Words 0.0 / 5 ? Physical EducationExercise physiologyA2/A-levelOCR Created by: Sophie PerrettCreated on: 19-11-15 19:44 Chemical energy Energy stored within the bonds if chemical compounds (within molecules) 1 of 17 Adenosine triphosphate (ATP) Chemical energy stored as a high energy compound in the body. It is the only immediately usable source of energy in the human body 2 of 17 Potential energy 'Stored' energy which is ready to be used when required 3 of 17 Kinetic energy Energy in the form of muscle contraction/joint movement 4 of 17 Energy Energy is the ability to perform work or put mass into motion. Measured in joules (J) 5 of 17 Work Work is done when a force is applied to a body to move it over a certain distance. Units are measured in joules (J) 6 of 17 Power Power is the rate at which work can be done, i.e. work divided by time. Units for power are watts (W) 7 of 17 Force A pull or push that alters, or tends to alter, the state of motion of a body. It is measured in Newtons (N) 8 of 17 Compound A mixture of elements 9 of 17 Enzyme Protein molecules that act as catalysts for the body's chemical reactions. 10 of 17 Exothermic A chemical reaction that releases energy as it progresses 11 of 17 Endothermic A chemical reaction that requires energy to be added for it to progress 12 of 17 Coupled reactions When the products from one reaction, such as energy, are then used in another reaction 13 of 17 Anaerobic A reaction that can occur without the presence of oxygen 14 of 17 Sacroplasm Fluid-like gelatine that fills the spaces with the muscle cells and is a store of glycogen, fat, proteins, enzymes and myoglobin 15 of 17 Threshold The point when one energy system stops being the predominant energy provider for the resynthesis of ATP 16 of 17 Anaerobic glycolysis The partial breakdown of glucose into pyruvic acid 17 of 17
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