Prevent Drunkenness~ Amethyst comes from the Greek amethystos meaning not drunken.. In Greek myth, amethyst was a pure young girl who refused to get drunk, thus incurring the wrath of Dionysus, the god of joviality. To protect her from his wrath, the goddess Diana turned her into quartz.
cellular respiration definition The chemical process that generates most of the energy in the cell, supplying molecules needed to make the metabolic reactions (see metabolism) of an organism run. Note: The main carrier of energy in metabolism is the molecule ATP.
Quick Answer. Cellular respiration requires energy from an organic source, such as glucose and oxygen, to take place. Cellular respiration is the process by which energy is harvested from an organic source and then stored in the form of ATP to later carry out reactions in the cell. Without the organic source of energy, the reactions cannot take place.