theor of tissues
1Metabolism — Cell metabolism redirects here. For the journal, see Cell Metabolism. Structure of adenosine triphosphate, a central intermediate in energy metabolism Metabolism (from Greek: μεταβολή metabolē , change or Greek: μεταβολισμός metabolismos,… …
2Plant defense against herbivory — Poison ivy produces urushiol to protect the plant from herbivores. In humans this chemical produces an allergic skin rash, known as urushiol induced contact dermatitis …
3Enzyme — Biocatalyst redirects here. For the use of natural catalysts in organic chemistry, see Biocatalysis. Human glyoxalase I. Two zinc ions that are needed for the enzyme to catalyze its reaction are shown as purp …
4Mitochondrion — For the metal band, see Mitochondrion (band). Two mitochondria from mammalian lung tissue displaying their matrix and membranes as shown by electron microscopy …
5Germinal center — Infobox Anatomy Name = Germinal centre Latin = GraySubject = 175 GrayPage = 689 Caption = Image labeled in German, but Keimzentrum visible in upper right. Caption2 = Precursor = System = Artery = Vein = Nerve = Lymph = MeshName = MeshNumber =… …
6Evolution of ageing — Enquiry into the evolution of ageing aims to explain why almost all living things weaken and die with age. There is not yet agreement in the scientific community on a single answer. The evolutionary origin of senescence remains a fundamental… …
7Cell nucleus — HeLa cells stained for the cell nucleus DNA with the Blue Hoechst dye. The central and rightmost cell are in interphase, thus their entire nuclei are labeled. On the left, a cell is going through mitosis and its DNA has condensed ready for… …
8Orthomolecular medicine — Intervention MeSH D009974 Biologically based alternative and comple …
9Handicap principle — The tail of peacocks, the classic example of a handicapped signal of male quality The handicap principle is a hypothesis originally proposed in 1975 by biologist Amotz Zahavi[1][2 …
10Somatic evolution in cancer — Somatic evolution is the accumulation of mutations in the cells of a body (the soma) during a lifetime, and the effects of those mutations on the fitness of those cells. Somatic evolution is important in the process of aging as well as the… …
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