what is the cell:
Cell is an anatomical and functional unit of living beings composed of cytoplasm and a nucleus protected by a membrane. The word cell is origin latin ‘cellula’.
In reference to the above, can be classified human beings in: unicellular consist of a single cell such as bacteria, protozoa, among others or multicellular comprised 2 or more cells such as animals, plants, etc. In addition, there are two main types of cells: the prokaryotes and eukaryotes.
Cytology is part of biology studying cells and their functions.
Cell is also small cell, cavity or hollow as a monastery cell. In addition, cell is a group that operates independently within a general organization, whether political, religious, among others, for example, those responsible were a group of people belonging to a guerrilla cell.
However, the term cell has different Bridgat depends on the context in which it is used. Stem cell are cells that are located in all multicellular organisms and possess the ability to divide through mitosis and generate two identical cells and cell lineages also specialized in each division photoelectric or photovoltaic cell is an electronic device that allows you to convert light energy into electricity using the photoelectric effect.
The cell term is relative to the cells or which is made up of cells. Cell is also the prison facility where prisoners are held incommunicado or vehicle where moves detainees. In America, phone is a phone, small apparatus which allows the user to communicate from anywhere, in other countries is known as mobile.
Function of the cell
the cell fulfills 3 functions: nutrition, relationship and reproduction. The function of nutrition is the incorporation, transformation and assimilation of food and, in this way, cell is its own matter. However, autotrophic cells produce their own organic matter using the chemical energy contained in inorganic matter, and heterotrophic cells produce their own organic matter from the organic matter of the food you eat. The role of relationship linking the living being with the environment and responds to the environment. The playback function is the process of formation of new cells from a cell initial or cell mother, through the mitosis or meiosis.
for plant cell theory was proposed in the year 1838 and for animals in 1839 by Matthias Jakob Shleiden and Theodor Schwann, which postulate that all organisms are composed of cells and the same derived from other previous cell, what is known as biogenesis. Also the vital functions of living organisms occur within cells and are contraladas by substances that they secrete and finally, each cell contains the hereditary information which allows the transmission of it to the next generation of cellular.
Eukaryotic cells and prokaryotic
eukaryotic cells are those that possess a cell nucleus within the nuclear envelope where contains the genetic material, in addition, the division cell in organisms with eukaryotic cells occurs via mitosis and its DNA is more complex. The plasma membrane of cells eukaryotes possess sterols, carbohydrates and their Ribosomes are larger. The bodies formed by these cells are called “eukaryotes”.
Prokaryotic cells are those that do not possess a nuclear core by which genetic material is scattered by the cytoplasm, in addition, cell division in organisms with prokaryotic cells occurs through the binary division and their DNA is not as complex as the cells referred to above. The membranes of prokaryotic cells do not have carbohydrates, sterols and Ribosomes are smaller. The bodies formed by this cell type are called “prokaryotes”.
Somatic cells are those that serve the growth of tissue and organ of a live as the skin, bones, among others. Somatic cells come from stem cells originated during embryonic development and suffer from a process of cell proliferation and apoptosis. The opposite of somatic cells are germ cells and from which gametes are formed.
The somatic cells that change may be the cause of cancers, especially colon cancer.
Plant and animal cell
Animal cell is a type of eukaryotic cell that form different tissues of animals. Animal cell contains: cell envelope consisting of cell membrane, cytoplasm where the cell organelles and the nucleus are. At the same time, the plant cell is a type of eukaryotic cell whose nucleus is a membrane-delimited. The plant cell contains: a vacuole that stores and transports water, nutrients, and wastes; plastids to synthesize food and chloroplasts.
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