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Topic: Cell (biology)

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In the News (Sat 25 May 19)

  The Biology Project: Cell Biology
Cell Membranes Learn that membranes are fluid, with components that move, change, and perform vital physiological roles as they allow cells to communicate with each other and their environment.
The Cell Cycle & Mitosis Understand the events that occur in the cell cycle and the process of mitosis that divides the duplicated genetic material creating two identical daughter cells.
The Cytoskeleton Learn that the cytoskeleton acts both a muscle and a skeleton, and is responsible for cell movement, cytokinesis, and the organization of the organelles within the cell.
www.biology.arizona.edu /cell_bio/cell_bio.html   (405 words)

  Cell (biology) - MSN Encarta
The smallest cell, a type of bacterium known as a mycoplasma, measures 0.0001 mm (0.000004 in) in diameter; 10,000 mycoplasmas in a row are only as wide as the diameter of a human hair.
Prokaryotic cells are among the tiniest of all cells, ranging in size from 0.0001 to 0.003 mm (0.000004 to 0.0001 in) in diameter.
The extraordinary biochemical diversity of prokaryotic cells is manifested in the wide-ranging lifestyles of the archaebacteria and the bacteria, whose habitats include polar ice, deserts, and hydrothermal vents—deep regions of the ocean under great pressure where hot water geysers erupt from cracks in the ocean floor.
encarta.msn.com /encyclopedia_761568585/Cell_(biology).html   (2372 words)

 Cell Biology
The infrastructure for research in cell biology is outstanding, with state-of-the-art light and electron microscopes and core facilities for the generation of transgenic and knock-out animals, peptide synthesis and sequencing, protein interaction, flow cytometry, mass spectrometry, cytogenetics, and many other applications.
The control of cell fate and cell migration are important topics both in developmental biology and in cell biology.
We use flow cytometry, cell culture, and transplant models in the mouse to define cell populations that are critical to hematopoiesis and bone marrow transplantation.
www.huntsmancancer.org /research/graduateStudies~/gradStudies/cellBio.jsp   (1528 words)

  Cell (biology)   (Site not responding. Last check: )
The cytoplasm of a eukaryotic cell is surrounded by a plasma membrane.
This membrane serves to separate and protect a cell from its surrounding environment and is made mostly from a double layer of lipids (fat-like molecules) and proteins.
Cariology is the study of the cell nucleus.
www.guideofpills.com /Cell_%28biology%29.html   (3649 words)

 Sloan-Kettering - Cell Biology
Stem cells divide to produce another stem cell and a daughter cell that looses its ability to divide as it takes on specialized functions.
Cell death, through apoptosis, is a major decision that cells take if they find themselves in inappropriate surroundings, or if they are subjected to serious damage.
Cells adopt defined shapes that are essential for their specialized functions and this often involves interactions with other cells to form organized tissues and organs.
www.mskcc.org /mskcc/html/5782.cfm   (493 words)

 UCMP Glossary: Cell biology
The cell consists primarily of an outer plasma membrane, which separates it from the environment; the genetic material (DNA), which encodes heritable information for the maintainance of life; and the cytoplasm, a heterogeneous assemblage of ions, molecules, and fluid.
Plants are known for their cell walls of cellulose, as are the green algae and certain protists, while fungi have cell walls of chitin.
The prokaryotic flagellum differs from the eukaryotic flagellum in that the prokaryotic flagellum is a solid unit composed primarily of the protein flagellin, while the eukaryotic flagellum is composed of several protein strands bound by a membrane, and does not contain flagellin.
www.ucmp.berkeley.edu /glossary/glossary_4.html   (1470 words)

 Cell Biology: Yale School of Medicine
Cell Biology therefore defines the very center of all efforts to understand all aspects of biology and human disease.
Cell Biology seeks to understand a continuum that starts with elucidating the molecular basis of how cells are constructed, how the thousands of cell types accomplish their individual tasks, and finally how these different cells cooperate to form tissues, systems, and organisms.
Cell biologists thus represent a diverse group, conversant in and committed to a wide variety disciplines: from genetics to biochemistry, from immunology to neurobiology, from development to informatics, from genomics to clinical medicine.
www.cellbiology.yale.edu   (201 words)

 Biological Cell Introduction - Cell Biology
Muscle cells are long and smooth in structure and their elastic nature allows these cells to perform flexible movements, just as they do in our own body's.
Cells at the back of the eye are sensitive to light stimuli, and thus can interpret differences in light intensity which can in turn be interpreted by our nervous system and brain.
The cell membrane, otherwise known as the plasma membrane is a semi-permeable structure consisting mainly of phospholipid (fat) molecules and proteins.
www.biology-online.org /1/1_cell.htm   (847 words)

 Cell (biology) - guideofcasinos.com   (Site not responding. Last check: )
Organisms vary from single cells (called single-celled or unicellular organisms) that function and survive more or less independently, through colonial forms with cells living together, to multicellular forms in which cells are specialized.
All cells whether prokaryotic or eukaryotic have a membrane, which envelopes the cell, separates its interior from its environment, controls what moves in and out, and maintains the electric potential of the cell.
Prokaryotic cells have three architectural regions: appendages called flagella and pili—proteins attached to the cell surface; a cell envelope consisting of a capsule, a cell wall, and a plasma membrane; and a cytoplasmic region that contains the cell genome (DNA) and ribosomes and various sorts of inclusions.
www.guideofcasinos.com /Cell_%28biology%29.html   (3424 words)

 What is a Cell
The simplest of cells, and the first types of cells to evolve, were prokaryotic cells—organisms that lack a nuclear membrane, the membrane that surrounds the nucleus of a cell.
The cells may be adjacent to one another because they did not separate after cell division or because they remained enclosed in a common sheath or slime secreted by the cells.
All cells arise from pre-existing cells, that is, their genetic material must be replicated and passed from parent cell to progeny.
www.ncbi.nlm.nih.gov /About/primer/genetics_cell.html   (8545 words)

 Cell (biology)   (Site not responding. Last check: )
This membrane serves to separate and protect a cell from its surrounding environment and is made mostly from a double layer of lipids (hydrophobic fat-like molecules) and hydrophilic phosphorous molecules.
As mitochondria contain their own genome that is separate and distinct from the nuclear genome of a cell, they play a critical role in generating energy in the eukaryotic cell, a process involving a number of complex metabolic pathways.
Prokaryotic cells have three architectural regions: appendages called flagella and pili proteins attached to the cell surface; a cell envelope consisting of a capsule, a cell wall, and a plasma membrane; and a cytoplasmic region that contains the cell genome (DNA) and ribosomes and various sorts of inclusions.
www.alloffinance.com /Cell_%28biology%29.html   (4244 words)

According to the Cell Theory, all living things are composed of one or more cells, and the functions of a multicellular organism are a consequence of the types of cells it has.
Prokaryotic cells are smaller (as a general rule) and lack much of the internal compartmentalization and complexity of eukaryotic cells.
Cell movement; is both internal, referred to as cytoplasmic streaming, and external, referred to as motility.
www.emc.maricopa.edu /faculty/farabee/BIOBK/BioBookCELL2.html   (3565 words)

 Cell Biology Lesson Plans
Cell Membrane/Surface Area Demos- Here are some simple, fun, cheap and educational surface area demonstrations to use when you are studying cell membranes.
Cell Size and Division or How Big Would You Want To Be- For all grades: to illustrate the usefulness of models to represent things which are too small (cells or molecules) or too large in science.
Cells, The Structural and Functional Units of Life- Have a working knowledge of the vocabulary applicable to plant and animal cells and the organelles within each cell.
www.teach-nology.com /teachers/lesson_plans/science/biology/cell   (665 words)

Focusing on the structure and function of the cell, this comprehensive new textbook incorporates the latest developments in cell biology.
This volume of Methods in Cell Biology, the first of two parts on the subject of zebrafish, provides a comprehensive compendia of laboratory protocols and reviews covering all the new methods developed since 1999.
In three volumes, it covers all aspects from molecular cell biology to clinical applications, highlighting the role of dendritic cells in fighting cancer, virus infections, and autoimmune diseases.
www.topuscellularcellphoneplace.com /Cell_Biology/info/3209801   (636 words)

 Biopharmaceutical Cell biology glossary
Cells are usually stained with one or more fluorescent dyes specific to cell components of interest, e.g., DNA, and fluorescence of each cell is measured as it rapidly transverses the excitation beam (laser or mercury arc lamp).
Cell rupture caused by physical or chemical means, or by phage infection and propagation leading to the release of the cell content; also the death of microorganisms after the stationary phase of a batch fermentation.
A special method of cell division, occurring in maturation of the germ cells, by means of which each daughter nucleus receives half the number of chromosomes characteristic of the somatic cells of the species.
www.genomicglossaries.com /content/cell_bio.asp   (6569 words)

 Biology News Net : Molecular & Cell Biology Archives
A protein that is largely absent in one type of skin cancer protects an important gene in a cell's defense against harmful mutations from being silenced, researchers at The University of Texas M. Anderson Cancer Center report in the July 20 edition of Molecular Cell.
Once a B cell is activated by the presence of a disease pathogen, it begins to make AID which directs and strengthens the B cells’ response to the infection by mutating the antibodies produced by the B cells.
When a cell is seriously stressed, say by a heart attack, stroke or cancer, a protein called Bak just may set it up for suicide, researchers have found.
www.biologynews.net /archives/molecular_cell_biology   (2095 words)

 Biology Department
The department is composed of diverse faculty with research interests ranging from Conservation Biology, Ecology, Marine Biology to Microbiology, Cell Biology and Molecular Biology The faculty is organized into the Division of Cell Biology, Microbiology and Molecular Biology and the Division of Integrative Biology.
Division of Cell Biology, Microbiology and Molecular Biology (CMM).
Modern biology is increasingly interdisciplinary, as it requires an understanding of interactions at many levels, from cells to organisms to populations to biogeochemistry to landscapes.
www.cas.usf.edu /biology   (294 words)

 Cell (journal)   (Site not responding. Last check: )
Cell is a bi-monthly peer-reviewed scientific journal which publishes novel research in any area of experimental biology that is significant outside its field.
Cell is a well-regarded journal and it had a 2004 Impact Factor of 28.389, which makes it one of the most cited scientific journals.
Cell is published by Cell Press a division of Elsevier.
www.alloffinance.com /Cell_%28journal%29.html   (715 words)

 Lesson 7: Cells
The cell membrane is selectively permeable, allowing only certain substances from the outside environment to enter the cell.
Pretend that your desk surface is the cytoplasm of the cell and that the edges represent the cell membrane.
The cells in similar tissues and organs in other animals are similar to those in human beings but differ somewhat from cells found in plants.
www.biologylessons.sdsu.edu /classes/lab7/lab7.html   (2898 words)

 Cell phones
What's cell phoned is cell phone The best thing about cell fone depends entirely on cellular, no contract is required by calling plans.
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About cell phone chargers and this is the best resource on headsets with consumer report.
best-cell-phone-deal.6kru.com /cell-phones.html   (723 words)

 Cell Biology Biowissenschaften in der Zellbiologie
Die Cell Biology ist ein Teilbereich der Biowissenschaften und ist in den letzten beiden Jahrzehnten immer wichtiger geworden, da sich mit Hilfe der Zellbiologie viel über das Leben einzelner Organismen lernen lassen kann.
Typische Untersuchungen im Bereich der Cell Biology sind Zellteilungen, die Bewegung von Zellen im einzelnen oder in Zellverbänden und in einem hohen Maß der kommunikative Austausch zwischen den einzelnen Zellen.
Besondere Beachtung fand die Cell Biology in den 1990er Jahren durch die ersten geglückten Klonversuche von Lebewesen (Stichwort: Klonschaf Dolly), die auf der einen Seite auch zu einer Kontroverse geführt haben, ob man sich als Mensch solch einen Klonprozess anmaßen dürfte.
www.bioprofil.de /cell-biology.html   (178 words)

 ATCC: Cell Biology Collection
The ATCC Cell Biology Collection is the most comprehensive and diverse of its kind in the world, consisting of over 3,600 cell lines from over 80 different species.
It holds over 950 cancer cell lines and over 1,000 hybridomas for production of monoclonal antibodies, as well as a variety of special collections.
Cell lines of the highest quality are essential for maintaining high standards in research.
www.atcc.org /common/catalog/cellBiology/cellBiologyIndex.cfm   (105 words)

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