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.
The several kinds of covenants. They are, 1. Express or implied. An express covenant, or a covenant in fact, is one expressly agreed between the parties and inserted in the deed. The law does not require any particular form to create an express covenant.