The functions of the cell are generally thought to determine the upper and lower limits of cell size. The determination of cell size has been a matter of inquiry by scientists for a century or more.
The cells must be large enough to include all of the necessary structures and materials, including DNA, ribosomes, enzymes and other cellular structures, determining the lower end of the scale. On the upper end of the scale, it must not be so large that it can no longer control the enzymatic and cell division processes that are essential to its functioning.
An individual cell must also be the right size to fit into whatever larger structure or substance it may be a part of as well as the environment in which it exists. Some experimental evidence suggests that the cell itself is aware of its size and can regulate it to time cell division.Learn More
Enzymes function as organic catalysts and a cell would not be able achieve homeostasis if the required enzymes were not present. Homeostasis refers to the maintenance of a stable internal environment and the presence of the proper enzymes within a cell is vital to the process.Full Answer >
Cell respiration takes place in the cytoplasm, the inner surface of a cell or through the mitochondria. The method depends on the type of cell.Full Answer >
Human cells contain a total of 46 chromosomes. These chromosomes have 22 pairs of autosomes and a pair of sex chromosomes, which determines the sex of the individual.Full Answer >
An animal cell vacuole is a small sac located in the cytoplasm of an animal cell. Vacuoles in animal cells act as storage pockets, storing nutrients or waste products.Full Answer >