Yeast, a cellular model. Yeast is a simple living being that functions in practically the same way as human cells. It is an historical subject of fundamental research to understand cellular and genetic phenomena. It is a representative model of all eukaryotic cells.
Covenant. An agreement, contract, or written promise between two individuals that frequently constitutes a pledge to do or refrain from doing something. The individual making the promise or agreement is known as the covenantor, and the individual to whom such promise is made is called the covenantee.
In order for a covenant to be enforceable, there must be both land which is burdened and land which is benefited. If the meaning of a restrictive covenant, or the extent of the land benefiting from it, is unclear, it is possible to make an application to court for it to be determined under section 84(2) of the Law of Property Act 1925.