science term cells definition
3694713f47398408fc21ffacb0b95aa1
cell 1. The basic unit of living matter in all organisms, consisting of protoplasm enclosed within a cell membrane. All cells except bacterial cells have a distinct nucleus that contains the cell's DNA as well as other structures like mitochondria and the endoplasmic reticulum.
ca8ded3b52397ab845982737ac1d7f53
Cell theory In biology, cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells. Cells are the basic unit of structure in all organisms and also the basic unit of reproduction. With continual improvements made to microscopes over time, magnification technology advanced enough to discover cells in the 17th century. This discovery is largely attributed to Robert Hooke, and began the scientific study of cells, also known as cell biology. Over a centur
bf99fa21b3a479742411fc3090dc3356
cellular (sĕl′yə-lər) adj. 1. Of, relating to, or resembling a cell. 2. Consisting of or containing a cell or cells: the cellular construction of a beehive; the cellular nature of plant and animal tissue.
ac6f90f2db931de6001f10e7f5f2dc70
Eukaryote A eukaryote (/ juː ˈ k ær i. oʊ t / or / juː ˈ k ær i ə t /) is any organism whose cells have a cell nucleus and other organelles enclosed within membranes. Eukaryotes belong to the domain Eukaryota or Eukarya, and can be unicellular or multicellular organisms.
3819e313417125046ad81e672fbf03e3
Outline of cell biology Light micrograph of a moss's leaf cells at 400X magnification. Cell biology – A branch of biology that includes study of cells regarding their physiological properties, structure, and function; the organelles they contain; interactions with their environment; and their life cycle, division, and death. This is done both on a microscopic and molecular level.
2ff8ca40391ca68a0820c3f39e1b8d2a
- Define stem cell: an unspecialized cell that gives rise to differentiated cells — stem cell in a sentence an unspecialized cell that gives rise to differentiated cells… See the full definition
53341dbfda04cfab5fd65e3c2f90e2fe
CELL Noun. 1. cell nucleus-a part of the cell containing DNA and RNA and responsible for growth and reproduction. karyon, nucleus. cell - (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals.oun. 1. cell nucleus-a part of the cell containing DNA and RNA and responsible for growth and reproduction. karyon, nucleus. cell - (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals.
a49d96177c82c785465c9a1c584fde05
"Who coined the term ""cell""?" looked at a thin slice of cork (oak cork) through a compound microscope observed tiny, hollow, roomlike structures called these structures 'cells' because they reminded him of the rooms that monks lived in
8d02d6e9b1b00ef18727395235f3ed79
Cell (biology) The cell (from Latin cella, meaning small room) is the basic structural, functional, and biological unit of all known living organisms. A cell is the smallest unit of life that can replicate independently, and cells are often called the building blocks of life. The study of cells is called cell biology. Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids.
2ca0bf14ae780edb527e75d24ac05cec
cell biology cell biology. noun. Medical Definition of cell biology. : a branch of biology dealing with the structure, function, and life history of cells and their constituents : cytology 1a Cooperation among the cytoplasmic elements is an emerging area of study in cell biology.—Jean L. Marx, Science, 9 Dec. 1983.
68cac2fd467158d3f0ad61411156074a
Definition of 'cell' biology A cell is the smallest part of an animal or plant. Animals and plants are made up of millions of cells.
ef33fe1e48acdec4039c2e39ad8945de
cell 1 The basic unit of all living things except viruses. In advanced organisms, cells consist of a nucleus (which contains genetic material), cytoplasm, and organelles, all of which are surrounded by a cell membrane.
573e9a83befd2d5f684c0644af155e7e
- An animal cell is a form of eukaryotic cell which make up many tissues in animals. The animal cell is distinct from other eukaryotes, most notably plant cells, as they lack cell walls and chloroplasts, and they have smaller vacuoles.
ff5512bb2b8fbbdd046d569ac908180d
cellular (ˈsɛljʊlə) adj. 1. (Biology) of, relating to, resembling, or composed of a cell or cells. 2. (Biology) having cells or small cavities; porous. 3. divided into a network of cells. 4. (Textiles) textiles woven with an open texture: a cellular blanket. 5. (Telecommunications) designed for or involving cellular radio.
59185881c51a6d09244b7f18e478f7ad
cell (biology) the basic structural and functional unit of living organisms. It consists of a nucleus, containing the genetic material, surrounded by the cytoplasm in which are mitochondria, lysosomes, ribosomes, and other organelles. All cells are bounded by a cell membrane; plant cells have an outer cell wall in addition.
43804afc3f406856530c565664f33043
- Medical Definition of Cell. Cell: The basic structural and functional unit of any living thing. Each cell is a small container of chemicals and water wrapped in a membrane. There are 100 trillion cells in a human, and each contains all of the genetic information necessary to manufacture a human being. This information is encoded within the cell nucleus in 6 billion subunits of DNA called base pairs.
28d9c8749b4607580690b8ba9085c9b4
Cellular Cellular. Definition. adjective. (1) Of, pertaining to, or resembling a cell. (2) Derived from, or consisting of cell (s). (3) Having numerous compartments or cells. Supplement. Word origin: NL cellulāris, equiv. to cellul (a) live cell (L: little room). Related phrases: cellular respiration. Compare: acellular.
6956e2954278057541d48cc0fe823977
- Cells are often called the “building blocks of life”. They are the basic unit of living organisms. Anything that is living is made of cells. This means you are made of cells, trees are made of cells, an ant is made of cells, and an apple is made of cells. Can you name other things that are made of cells? Long ago, people did not know that cells even existed. Cells are so tiny, we cannot see them with our naked eyes. The invention of the microscope gave people to see and discover cells for the very first time. The first recorded discovery of cells was in 1655, when an English scientist named Robert Hooke took Anton van Leeuwenhoek's light. microscope and improved upon its design and studied a slice of cork under the lens.
1754636e548dab5bf202bd442d211ac4
Myeloblast cell (biology): The nucleus. in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature.
e50f271d125d5a01e4f1215abfcacfd9
cell 1. any of the protoplasmic masses making up organized tissue, consisting of a nucleus surrounded by cytoplasm enclosed in a cell or plasma membrane. It is the fundamental, structural, and functional unit of living organisms.
e2f7d5e64fc76ad200b879abb55ee528
General Biology/Cells/Cell Structure The word cell comes from the Latin word cella, meaning small room, and it was first coined by a microscopist observing the structure of cork. The cell is the basic unit of all living things, and all organisms are composed of one or more cells.Cells are so basic and critical to the study of life, in fact, that they are often referred to as the building blocks of life.he generally accepted portions of the modern Cell Theory are as follows: (1) The cell is the fundamental unit of structure and function in living things. (2) All organisms are made up of one or more cells.
813c2bfe8a72c564d93523da95dbd5a7
cell 3. (Biology) biology the basic structural and functional unit of living organisms. It consists of a nucleus, containing the genetic material, surrounded by the cytoplasm in which are mitochondria, lysosomes, ribosomes, and other organelles. All cells are bounded by a cell membrane; plant cells have an outer cell wall in addition.
2a730f90da49f5166c1f4bf053d848fe
Cell (biology) The cell (from Latin cella, meaning small room) is the basic structural, functional, and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate independently, and are often called the building blocks of life. The study of cells is called cell biology.Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids.Organisms can be classified as unicellular (consisting of a single cell; including bacteria) or multicellular (including plants and animals).hile the number of cells in plants and animals varies from species to species, humans contain more than 10 trillion (10 13) cells. Most plant and animal cells are visible only under the microscope, with dimensions between 1 and 100 micrometres.
37657adf2aa25c9cbca907ea039b0860
Definition of 'cell membrane' Definition of 'cell membrane'. cell membrane in British. noun. a very thin membrane, composed of lipids and protein, that surrounds the cytoplasm of a cell and controls the passage of substances into and out of the cell. . Also called : plasmalemma, plasma membrane.
5ac14129ec1e251342409437434580e7
Cell (biology) The cell (from Latin cella, meaning small room) is the basic structural, functional, and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate independently, and are often called the building blocks of life. The study of cells is called cell biology.Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids. Organisms can be classified as unicellular (consisting of a single cell; including bacteria) or multicellular (including plants and animals).he cell (from Latin cella, meaning small room) is the basic structural, functional, and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate independently, and are often called the building blocks of life. The study of cells is called cell biology.
a5d6cafa676f2f93372bf0ed18fcd6df
- Cells are the smallest unit of life that can replicate independently, and are often called the building blocks of life. The study of cells is called cell biology. Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids. Organisms can be classified as unicellular (consisting of a single cell; including bacteria) or multicellular (including plants and animals).