plant cell is an elementary unit of a living organism - plant.It contains components that are common to all eukaryotic organisms: nucleus, cytoplasm, Golgi apparatus, mitochondria, endoplasmic reticulum, ribosomes and lysosomes, microtubules.However, the plant cell has a difference - is the presence of plastids, the vacuole and the cellulose wall.
unites all together and organelles involved in the metabolism of a special semi live among the elementary units (cells) - the cytoplasm.The structure of the cytoplasm rather complicated.It is a multicomponent colloidal solution, which could change from sol to gel.The entire cell is riddled with the protein strands that form the cytoskeleton structural unit.It comprises water, which accounts for from 60 to 90% of the total weight proteins (10-20%) and lipids (23%), as well as organic and inorganic substances.The role of the cytoplasm to the cell's life is very great:
- it is the medium in which chemical reactions;
- been actively involved in the metabolism;
- support turgor and temperature regulation;
- performs a supporting function, helps maintain cell shape.
Impact on semi-solid medium cells have external factors - temperature, light, air composition, the amount of water.All this directly affects the movement of the cytoplasm, where it is always in.By moving the colloidal solution with nutrients (oxygen, ATP, etc.), an elementary unit of a living organism exist.Vital functions of the cells is carried out a set of physiological processes.Power structural unit of a living organism occurs during biochemical reactions, resulting in inorganic materials are converted into organic.Plant cell breathes oxygen produced during the oxidation of complex compounds - carbohydrates, lipids, amino acids.Simultaneously with breathing occurs synthesis and release of energy necessary to sustain life.The plant cell grows by stretching cellulose wall and increase the cytoplasm and vacuoles.
Together, these processes of life take part in the metabolism, the main essence of which - the formation of new products, their decomposition into smaller components, removal of cells or deposition of decay products in the form of reserve substances.Selecting unnecessary links going through the cell wall, and moving collection (education) of new structures is carried out by the movement of the cytoplasm.
important property of cells is their ability to reproduce by dividing.The result of this process - the formation of two structural units affiliated living organism, which has a set of chromosomes, identical to the parent.
Thus, the plant cell is the smallest living structure of the body, she eats, breathes, reacts to stimuli, grows, multiplies, and the cytoplasm and organelles are immersed in it are involved in metabolism.
