Protein biosynthesis – the major process in a living organism. Each cage contains a set of proteins including those that are inherent only in this type of cages. As all proteins collapse sooner or later, they need to be restored continuously. This process demands expenses of energy which universal source is ATP.

Temperature of melting of solid substance is taken for definition of degree of its purity. Impurity in pure substance usually lower temperature of melting or increase an interval in which connection melts. The method with use of a capillary is classical for control of content of impurity.

Density of electrolyte decreases at an accumulator discharge where it is filled in. To lift its density, try to charge the accumulator before boiling in banks. If after that density of electrolyte did not rise to the necessary indicator, make in it room and add sulfuric acid.

Atom, forming a chemical bond with others, can become a positively charged or negatively charged ion. It depends on that how many electrons it will give to the next atoms, or, on the contrary, will attract to itself. The quantity of the given or attracted electrons characterizes such concept as oxidation level. That is, if atom gave one electron, its oxidation level will be +1. And if it accepted two others electrons, then its oxidation level will be-2.