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  2. Composition of the human body - Wikipedia

    en.wikipedia.org/wiki/Composition_of_the_human_body

    Aluminium, the third most common element in the Earth's crust (after oxygen and silicon), serves no function in living cells, but is toxic in large amounts, depending on its physical and chemical forms and magnitude, duration, frequency of exposure, and how it was absorbed by the human body. [38] Transferrins can bind aluminium. [39]

  3. Biological system - Wikipedia

    en.wikipedia.org/wiki/Biological_system

    Artist impression of cell components. The exact components of a cell are determined by whether the cell is a eukaryote or prokaryote. [7] Nucleus (eukaryotic only): storage of genetic material; control center of the cell. Cytosol: component of the cytoplasm consisting of jelly-like fluid in which organelles are suspended within; Cell membrane ...

  4. Cell (biology) - Wikipedia

    en.wikipedia.org/wiki/Cell_(biology)

    The cell is the basic structural and functional unit of all forms of life. Every cell consists of cytoplasm enclosed within a membrane; many cells contain organelles, each with a specific function. The term comes from the Latin word cellula meaning 'small room'. Most cells are only visible under a microscope.

  5. List of human blood components - Wikipedia

    en.wikipedia.org/wiki/List_of_human_blood_components

    Needed for nerve cells, red blood cells, and to make DNA 6-14 × 10 −10: 1-10 × 10 −10: Cocarboxylase: 7-9 × 10 −8: Complement system: C1q 5.8-7.2 × 10 −5: C1r 2.5-3.8 × 10 −5: C1s (C1 esterase) 2.5-3.8 × 10 −5: C2 2.2-3.4 × 10 −5: C3( b1C-globulin) 8-15.5 × 10 −4: factor B (C3 proactivator) 2-4.5 × 10 −4: C4 (b1E ...

  6. Cell biology - Wikipedia

    en.wikipedia.org/wiki/Cell_biology

    Cell biology (also cellular biology or cytology) is a branch of biology that studies the structure, function, and behavior of cells. [1] [2] All living organisms are made of cells. A cell is the basic unit of life that is responsible for the living and functioning of organisms. [3] Cell biology is the study of the structural and functional ...

  7. Cellular component - Wikipedia

    en.wikipedia.org/wiki/Cellular_component

    While the majority of cellular components are located within the cell itself, some may exist in extracellular areas of an organism. [5] Cellular components may also be called biological matter or biological material. Most biological matter has the characteristics of soft matter, being governed by relatively small energies. All known life is ...

  8. Cytochemistry - Wikipedia

    en.wikipedia.org/wiki/Cytochemistry

    Cytochemistry is a science of localizing chemical components of cells and cell organelles on thin histological sections by using several techniques like enzyme localization, micro-incineration, micro-spectrophotometry, radioautography, cryo-electron microscopy, X-ray microanalysis by energy-dispersive X-ray spectroscopy, immunohistochemistry ...

  9. Outline of cell biology - Wikipedia

    en.wikipedia.org/wiki/Outline_of_cell_biology

    Light micrograph of a moss's leaf cells at 400X magnification. The following outline is provided as an overview of and topical guide to cell biology: . 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.

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