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Topic: Cell metabolism

Related Topics

Metabolic pathway

Cell (biology)

Catabolism

Metabolism

Biological cell

Anaerobic metabolism

Carbohydrate catabolism

Plasma membrane

Fat catabolism

Biochemistry

Molecular biology

Cellular respiration

Anaerobic respiration

Monoclonal antibody

Carbohydrate

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	Cell metabolism - Wikipedia, the free encyclopedia
		Cell metabolism is the process (or really the sum of many ongoing individual processes) by which living cells process nutrient molecules and maintain a living state.
		Metabolism has two distinct divisions: anabolism, in which a cell uses energy and reducing power to construct complex molecules and perform other life functions such a creating cellular structure; and catabolism, in which a cell breaks down complex molecules to yield energy and reducing power.
		Cell metabolism involves extremely complex sequences of controlled chemical reactions called metabolic pathways.
	en.wikipedia.org /wiki/Cell_metabolism (317 words)

	Cell (biology) - Wikipedia, the free encyclopedia
		The cell is the structural and functional unit of all living organisms, and is sometimes called the "building block of life." Some organisms, such as bacteria, are unicellular, consisting of a single cell.
		The cytoplasm of a eukaryotic cell is surrounded by a plasma membrane.
		Metabolism has two distinct divisions: catabolism, in which the cell breaks down complex molecules to produce energy and reducing power, and anabolism, wherein the cell uses energy and reducing power to construct complex molecules and perform other biological functions.
	en.wikipedia.org /wiki/Cell_(biology) (3501 words)

	Metabolism - Wikipedia, the free encyclopedia
		Metabolism (from μεταβολισμος ("metabolismos")) is the biochemical modification of chemical compounds in living organisms and cells.
		Metabolism usually consists of sequences of enzymatic steps, also called metabolic pathways.
		Secondary metabolism, metabolic pathways that are not essential for growth, development or reproduction, but that usually have ecological function.
	en.wikipedia.org /wiki/Metabolism (435 words)

	High School Biology: Cell Metabolism
		Metabolism- It is the total energy that is released and consumed by a cell.
		Metabolism is the sum of the total energy of catabolism and anabolism.
		In Muscle Cells- During extraneous activities, the oxygen in the muscle tissue is decreased to an extent that aerobic respiration does not occur at a sufficient rate.
	www.courseworld.com /bio/cellmetab.html (1429 words)

	[No title]
		Cell metabolism is one of the two basic processes of life in a cell.
		Cell reproduction is one of the two basic processes of life in a cell.
		The processes of cell metabolism and cell reproduction are organized around a set of nucleic acid molecules referred to as the cell's genome.
	www36.pair.com /waldzell/Library/Inventory/Liv/Cell.html (543 words)

	High School Biology: Cell Reference
		The cell theory was extended by others and drew the attention of biologists to the study of cell contents.
		Cell Wall- Bacteria cell wall consists of Muriens, a polymer of polysaccharides, and the amino acid Muramic acid.
		The two new daughter cells have the same genetic information as the parental cell except that the daughter cells now have half of the original amount of cytoplasm and surface area.
	www.courseworld.com /bio/cell.html (2891 words)

	Human Physiology - Cell structure and function
		Cells also contain a nucleus within which is found DNA (deoxyribonucleic acid) in the form of chromosomes plus nucleoli (within which ribosomes are formed)
		Cells must be able to 'capture' and store energy and release that energy in appropriate amounts when needed.
		So, cells gradually break down glucose in a whole series of reactions and use the smaller amounts of energy released in these reactions to produce ATP (Adenosine Triphosphate) from ADP (Adenosine Diphosphate).
	people.eku.edu /ritchisong/301notes1.htm (2537 words)

	Diabetes: Cell-specific carbohydrate metabolism regulates... @ HighBeam Research (Site not responding. Last check: 2007-10-08)
		CHO cells have a decrease in S14 transcriptional activity with glucose addition because the rate of pyruvate oxidation is diminished by glucose.
		The glucose inhibition in CHO cells is depicted by the broken arrow in Fig.
		The difference in response to the sugars between in vivo rat liver and the transfected cells is likely attributed to the differential carbohydrate metabolism by liver cells in vivo from that by nonhepatic and hepatic cells in culture.
	highbeam.com /library/doc0.asp?DOCID=1G1:12358819&... (5037 words)

	CYCLING PERFORMANCE TIPS - basic physiology - cell energy metabolism
		It is this ATP, synthesized as the cell metabolizes (or breaks down) these three basic foods that transfers the energy content of all foods to muscle action.
		Anaerobic metabolism is limited by the buildup of lactic acid which begins within minutes and degrades athletic performance by impairing muscle cell contraction and producing actual physical discomfort or pain.
		However this small amount of lactic acid is readily metabolized by liver and muscle cells, and does not accumulate to the degree that occurs at with anaerobic ATP activity (as in a sprint, for example).
	www.cptips.com /bscphys.htm (1380 words)

	V Foundation for Cancer Research
		The interleukin 7 (IL7) receptor is required to maintain the cell metabolism and survival for normal T lymphocytes as well as for many T cell acute lymphoblastic lymphomas (T-ALL).
		We have generated cell lines with normal and mutant IL7 receptors and are in the process of analyzing specific biochemical pathways induced by IL7 that regulate cell metabolic and survival processes.
		Cell metabolism is an understudied area of cancer biology and support from The V Foundation has been a key component of making this work possible.
	www.jimmyv.org /news.cfm?newsid=163 (551 words)

	Introductory Biology Courseware (103)- Cell Metabolism (Site not responding. Last check: 2007-10-08)
		The terms exergonic and endergonic are used to denote release or uptake, respectively, of free energy by reactants.Both kinds of reactions occur within cells.
		Reactions which are exergonic tend to proceed spontaneously; those which are endergonic require input of energy, usually in the form of the energy released when energy intermediates undergo hydrolysis.
		When such a quantity of energy is released, the cell may "capture" the energy by using it to phosphorylate a molecule of AMP or ADP, thus producing ADP or ATP, respectively.
	tidepool.st.usm.edu /crswr/103cellmetabolism.html (838 words)

	Biophysical Journal: Extreme pathways analysis of human red blood cell metabolism
		Herein, the extreme pathways of the well-characterized human red blood cell metabolic network were calculated and interpreted in a biochemical and physiological context.
		Additionally, results from a full kinetic model of red blood cell metabolism were predicted based solely on an interpretation of the extreme pathway structure.
		Unlike most metabolic networks, the red cell does not need to generate biomass; its main task is to produce the necessary cofactors (ATP, NADPH, and NADH) for maintaining its osmotic balance and electroneutrality and fighting oxidative stresses.
	www.findarticles.com /p/articles/mi_qa3938/is_200208/ai_n9109724 (1295 words)

	Red cell metabolism (from human blood) -- Encyclopædia Britannica (Site not responding. Last check: 2007-10-08)
		Survival of the red cell in the circulation depends upon the continuous utilization of glucose for the production of energy.
		Blood cells are divided into three groups: the red blood cells (erythrocytes), the white blood cells (leukocytes), and the blood platelets (thrombocytes).
		A single cell is often a complete organism in itself, such as a bacterium or yeast.
	www.britannica.com /eb/article-35421 (805 words)

	Depression of cell metabolism and proliferation by membrane-permeable and -impermeable modulators: role for AMP-to-ATP ...
		Analyses of adenine nucleotides and analogs in J774.A1 cells.
		Influence of poration in the presence of AMPS on proliferation of mouse macrophage cells (J774.A1).
		Physiological and metabolic responses to hypoxia in invertebrates.
	ajpregu.physiology.org /cgi/content/full/288/2/R501 (6415 words)

	Extreme Pathway Analysis of Human Red Blood Cell Metabolism -- Wiback and Palsson 83 (2): 808 -- Biophysical Journal
		FIGURE 1 The red blood cell metabolic map depicting the classical pathways of glycolysis, the Rapoport-Leubering shunt, the pentose phosphate pathway, and adenosine metabolism (demarcated by the dashed lines).
		The red blood cell's capacity to respond to loads (hatched region) is defined as the difference between the steady-state operating point (fl diamond) and the edge of the solution space representing the maximum capabilities of the cell (dotted line).
		The cell's ability to respond to energy loads (fl hatched region) is decreased as compared with the normal cell (gray hatched region).
	www.biophysj.org /cgi/content/full/83/2/808 (3702 words)

	Cell Organelles: Membrane and Cytosol
		The membrane is a double layer of lipids (lipid bilayer) but is made quite complex by the presence of numerous proteins that are important to cell activity.
		: The cytosol is the "soup" within which all the other cell organelles reside and where most of the cellular metabolism occurs.
		Though mostly water, the cytosol is full of proteins that control cell metabolism including signal transduction pathways, glycolysis, intracellular receptors, and transcription factors.
	www.cellsalive.com /cells/membrane.htm (105 words)

	CellPress Online (Site not responding. Last check: 2007-10-08)
		Cell Press announces the launch of its Affiliated Subscription Program, which will provide a free Cell personal print subscription to any individual affiliated with an institution in the USA or Canada that has licensed Cell Online via Elsevier’s ScienceDirect platform.
		Cell Press President and CEO Lynne Herndon noted, “This new business model has advantages for all of Cell’s constituents-researchers, institutions, advertisers, and authors-by increasing the journal’s visibility and impact in life sciences research.
		Cell Press is pleased to announce that access to the recent online archive of Cell and the other premier journals of the Cell Press collection became freely available beginning in January 2005.
	www.cellpress.com (776 words)

	Fat Cell Metabolism May Change During Menopause (Site not responding. Last check: 2007-10-08)
		Maryland researchers report that during menopause, fat metabolism appears to change and women are more likely to store--and less likely to get rid of--fat.
		It is not clear why fat cell metabolism changes at that time, though a number of possible explanations exist.
		Hormonal changes during menopause, particularly lower levels of estrogen produced by the ovaries, and "factors secreted by the fat cells may also affect LPL activity, and the amount secreted may differ," Ferrara explained.
	www.diabetic-help.com /fat_cell_metabolism_may_change_d.htm (407 words)

	Energy state of the cell (from metabolism) -- Britannica Student Encyclopedia
		Within the cell, the concentrations of both are unlikely to vary sufficiently to allow them to serve as effective regulatory metabolites.
		A solar cell, for example, consists of a semiconductor junction that converts sunlight directly into electricity.
		A dry cell is a chemical battery in which no free liquid is present, the electrolyte being soaked up by some...
	www.britannica.com /ebi/article-52128 (885 words)

	Botany online: The Cell's Basic Metabolism (Site not responding. Last check: 2007-10-08)
		The metabolism, that is, as you might recall, the sum of all biochemical processes, consists of both catabolic and anabolic processes.
		The most important acceptor of protons and electrons within a cell is nicotinamide adenine dinucleotide (NAD).
		It precedes the citric acid cycle that functions in the cell's metabolism both as a distributor (a number of biosynthetic pathways start here) and to feed protons into the respiratory chain.
	www.biologie.uni-hamburg.de /b-online/e19/19.htm (365 words)

	Cell Online (Site not responding. Last check: 2007-10-08)
		Cell's Leading Edge is a new section that highlights the social, political, economic, and ethical concerns surrounding biomedical research worldwide.
		In keeping with Cell's emphasis on the complete story, new article formats allow leading scientists and policy makers to present in-depth, thought-provoking evaluations of important policies and trends.
		In this Minireview, Simona Polo and Pier Paolo Di Fiore examine the inseparable union between endocytosis and cell signalling by providing examples from the fields of cell migration and cell-fate determination.
	www.cell.com (285 words)

	Home > Cell Biology > Cell metabolism
		This page is part of the Metabolic Pathways of Biochemistry site which is designed to "graphically represent all major metabolic pathways, primarily those important to human biochemistry", aimed primarily at students and scientists.
		The overall reaction for the pathway is shown, followed by a diagrammatic guide through the individual steps of the reaction, which includes the chemical structures of all compounds in the pathway and the enzyme catalysing each reaction.
		This page is part of the Metabolic Pathways of Biochemistry site which is designed to "graphically represent all major metabolic pathways, primarily those important to human biochemistry", aimed at students, scientists and others.
	bioresearch.ac.uk /nb/c784445f268824a10fc1ce8671bd4991.html (2938 words)

	Cell Metabolism
		Metabolism is the total of all of the chemical...
		Cell metabolism is the process by which individual cell...
		Wal-Mart.com: Cancer Cell Metabolism and Cancer Treatment By...
	diet-pills-review.speedylearning.com /diet-pills/cell-metabolism.html (476 words)

	Metabolism, Cellular Respiration & Photosynthesis - BioChemWeb.org
		The Main Metabolic Pathways - Map of main metabolic pathways, such as glycolysis, the citric acid cycle, fatty acid synthesis and oxidation, amino acid metabolism and the urea cycle, with chemical figures.
		Metabolic Pathways of Biochemistry - Graphical representation of metabolic pathways that are crucial to human metabolism, including 2-D and 3-D depictions.
		Metabolic Database - Database listing metabolic intermediates and their relationships.
	www.biochemweb.org /metabolism.shtml (645 words)

	Insight into cell metabolism will help interpret PETs, MRIs
		NADH concentration has been used as an indicator for cell metabolism for some 50 years, but harmful levels of ultraviolet radiation were required to induce the fluorescence needed for the measurements.
		And because NADH is converted in the metabolic process to non-fluorescent NAD+, researchers can gauge how much oxidation is occurring in a cell based on its fluorescence.
		Kasischke's paper filled an important piece of the metabolic puzzle by showing that brain cells have distinct roles in the metabolic process.
	www.eurekalert.org /pub_releases/2005-07/cuns-iic071105.php (788 words)

	Cell Metabolism
		The studies report genetic evidence that the cellular powerhouses known as mitochondria are required for cells to detect and respond to changes in the availability of oxygen.
		Byproducts of mitochondrial activity, called reactive oxygen species or free radicals, signal low oxygen conditions, launching a cascade of effects that allow cells to adapt, their research shows.
		In mouse cells lacking mitochondrial activity, oxygen sensing fails and a component of element of hypoxia response, HIF-1a, is degraded as it is under normal oxygen, Simon's team reported.
	www.theallineed.com /science/05062303.htm (438 words)

	In Vitro Effects of Transcatheter Injection on Structure, Cell Viability, and Cell Metabolism in Fibroblast-impregnated ...
		The fluorescence of subcellular fragments and dead cell debris (arrows) was proportionately represented in the total surface area summation for dead cells.
		Graph of the average difference in the rate of glucose metabolism between transcatheter and control microspheres as a percentage of the rate of glucose metabolism for control microspheres (control rate - transcatheter rate/control rate).
		Islet cell transplantation in seven patients with type 1 using a glucocorticoid free immunosuppressive regimen.
	radiology.rsnajnls.org /cgi/content/full/220/2/428 (4458 words)

	Simplified Diagram of Cellular Metabolism (Site not responding. Last check: 2007-10-08)
		Simplified diagram of the three stages of cellular metabolism that lead from food to waste products in animal cells.
		This series of reactions produces ATP, which is then used to drive biosynthetic reactions and other energy-requiring processes in the cell.
		Stage 2 occurs mainly in the cytosol, except for the final step of conversion of pyruvate to acetyl groups on acetyl CoA, which occurs in mitochondria.
	www.accessexcellence.org /AB/GG/cell_Metab.html (98 words)

	The making of a fat cell
		The team identified changes in the activity of hundreds of genes during the transition to fat cells, including a critical switch in gene activity--from integrin alpha 5 to integrin alpha 6.
		Integrins are a superfamily of cell surface proteins that are involved in binding to the extracellular matrix, a meshwork of protein and fiber supports outside of cells that can influence their behavior.
		While there is no evidence as yet to suggest that changes in integrin function underlie metabolic disorders, the fuller understanding of what happens in fat formation opens new avenues for exploration, he said.
	www.eurekalert.org /pub_releases/2005-09/cp-tmo090705.php (506 words)

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