Definition of Cell theory. Meaning of Cell theory. Synonyms of Cell theory

Here you will find one or more explanations in English for the word Cell theory. Also in the bottom left of the page several parts of wikipedia pages related to the word Cell theory and, of course, Cell theory synonyms and on the right images related to the word Cell theory.

Definition of Cell theory

Cell theory
Cell Cell, n. [OF. celle, fr. L. cella; akin to celare to hide, and E. hell, helm, conceal. Cf. Hall.] 1. A very small and close apartment, as in a prison or in a monastery or convent; the hut of a hermit. The heroic confessor in his cell. --Macaulay. 2. A small religious house attached to a monastery or convent. ``Cells or dependent priories.' --Milman. 3. Any small cavity, or hollow place. 4. (Arch.) (a) The space between the ribs of a vaulted roof. (b) Same as Cella. 5. (Elec.) A jar of vessel, or a division of a compound vessel, for holding the exciting fluid of a battery. 6. (Biol.) One of the minute elementary structures, of which the greater part of the various tissues and organs of animals and plants are composed. Note: All cells have their origin in the primary cell from which the organism was developed. In the lowest animal and vegetable forms, one single cell constitutes the complete individual, such being called unicelluter orgamisms. A typical cell is composed of a semifluid mass of protoplasm, more or less granular, generally containing in its center a nucleus which in turn frequently contains one or more nucleoli, the whole being surrounded by a thin membrane, the cell wall. In some cells, as in those of blood, in the am[oe]ba, and in embryonic cells (both vegetable and animal), there is no restricting cell wall, while in some of the unicelluliar organisms the nucleus is wholly wanting. See Illust. of Bipolar. Air cell. See Air cell. Cell development (called also cell genesis, cell formation, and cytogenesis), the multiplication, of cells by a process of reproduction under the following common forms; segmentation or fission, gemmation or budding, karyokinesis, and endogenous multiplication. See Segmentation, Gemmation, etc. Cell theory. (Biol.) See Cellular theory, under Cellular.
Cell theory
Cellular Cel"lu*lar, a. [L. cellula a little cell: cf. F. cellulaire. See Cellule.] Consisting of, or containing, cells; of or pertaining to a cell or cells. Cellular plants, Cellular cryptogams (Bot.), those flowerless plants which have no ducts or fiber in their tissue, as mosses, fungi, lichens, and alg[ae]. Cellular theory, or Cell theory (Biol.), a theory, according to which the essential element of every tissue, either vegetable or animal, is a cell; the whole series of cells having been formed from the development of the germ cell and by differentiation converted into tissues and organs which, both in plants ans animals, are to be considered as a mass of minute cells communicating with each other. Cellular tissue. (a) (Anat.) See conjunctive tissue under Conjunctive. (b) (Bot.) Tissue composed entirely of parenchyma, and having no woody fiber or ducts.

Meaning of Cell theory from wikipedia

- In biology, cell theory is a scientific theory first formulated in the mid-nineteenth century, that living organisms are made up of cells, that they are...
- Tom Clancy's Splinter Cell: Chaos Theory is a stealth game developed by Ubisoft Montreal and Ubisoft Milan. The game was released for GameCube, PlayStation...
- Cell theory, developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that cells are...
- The theory of solar cells explains the process by which light energy in photons is converted into electric current when the photons strike a suitable...
- been used in theories to explain the evolution of cells, for instance in the pre-cell theory, dealing with the evolution of the first cells on this planet...
- Cell theory has its origins in seventeenth century microscopy observations, but it was nearly two hundred years before a complete cell membrane theory...
- Cellular theory of ageing can be categorized as telomere theory, free radical theory (free-radical theory of aging) and apoptosis. The stem cell theory of aging...
- Artificial cell Bacterial cell structure Bangstad syndrome Cell cortex Cell damage, including damage to cell membrane Cell theory Cytoneme Elasticity of cell membranes...
- A cell wall is a structural layer that surrounds some cell types, found immediately outside the cell membrane. It can be tough, flexible, and sometimes...
- Ptolemaic theory Biology: Cell theory — Chemiosmotic theory — Evolution — Germ theory — Symbiogenesis Chemistry: Molecular theory — Kinetic theory of gases...