Question

about how Much energy from our food is transformed into unsable chemical energy

Answer 1

Chemical energy is stored in the bonds that connect atoms with other atoms and molecules with other molecules. Because chemical energy is stored, it is a form of potential energy...The food we eat contains stored chemical energy. As the bonds between the atoms in food loosen or break, a chemical reaction takes place, and new compounds are created....The energy produced from this reaction keeps us warm, helps us move, and allows us to grow. Different foods store different amounts of energy...Six types of chemical reactions exist: synthesis, combustion, single displacement, double displacement, decomposition and acid-base. Synthesis is when two simple substances combine and make a complex substance. In combustion, heat is released when the oxygen combines with other substances to change into water and carbon dioxide.. At the end of glycolysis, about 90%  of the chemical energy get unused...Glycolysis produces 2 ATP, 2 NADH, and 2 pyruvate molecules: Glycolysis, or the aerobic catabolic breakdown of glucose, produces energy in the form of ATP, NADH, and pyruvate, which itself enters the citric acid cycle to produce more energy.