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  2. 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.

  3. Cell physiology - Wikipedia

    en.wikipedia.org/wiki/Cell_physiology

    Cell physiology is the biological study of the activities that take place in a cell to keep it alive. The term physiology refers to normal functions in a living organism. [1] ...

  4. Mitochondrion - Wikipedia

    en.wikipedia.org/wiki/Mitochondrion

    A mitochondrion (pl. mitochondria) is an organelle found in the cells of most eukaryotes, such as animals, plants and fungi.Mitochondria have a double membrane structure and use aerobic respiration to generate adenosine triphosphate (ATP), which is used throughout the cell as a source of chemical energy. [2]

  5. Cell membrane - Wikipedia

    en.wikipedia.org/wiki/Cell_membrane

    Illustration of a eukaryotic cell membrane Comparison of a eukaryotic vs. a prokaryotic cell membrane. The cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates and protects the interior of a cell from the outside environment (the extracellular space).

  6. Ultrastructure - Wikipedia

    en.wikipedia.org/wiki/Ultrastructure

    The ultrastructure of a single bacterial cell (Bacillus subtilis).The scale bar is 200 nm.. Ultrastructure (or ultra-structure) is the architecture of cells and biomaterials that is visible at higher magnifications than found on a standard optical light microscope.

  7. Cell group - Wikipedia

    en.wikipedia.org/wiki/Cell_group

    The term cell group is derived from biology: the cell is the basic unit of life in a body. In a metaphorical sense, just as a body is made up of many cells that give it life, the cell church is made of cell groups that give it life.

  8. Physidae - Wikipedia

    en.wikipedia.org/wiki/Physidae

    According to ITIS and WoRMS, this family is classified into 4 genera, although the 4 genera from each database has a little bit difference.The classification from the taxonomy by Bouchet & Rocroi (2005), [3] which is based on classification by Taylor (2003): [7] Taylor classifies Physidae according to the anatomical differences of their penis, the differences among the penial complex, penial ...

  9. Homosexual behavior in animals - Wikipedia

    en.wikipedia.org/wiki/Homosexual_behavior_in_animals

    The term homosexual was coined by the Hungarian writer and campaigner Karl Maria Kertbeny in 1868 to describe same-sex sexual attraction and sexual behavior in humans. [11] ...