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  2. File:High School Biology Workbook.pdf - Wikipedia

    en.wikipedia.org/wiki/File:High_School_Biology...

    Original file (1,275 × 1,650 pixels, file size: 3.12 MB, MIME type: application/pdf, 341 pages) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

  3. CDC20 - Wikipedia

    en.wikipedia.org/wiki/CDC20

    The cell division cycle protein 20 homolog is an essential regulator of cell division that is encoded by the CDC20 gene [5] [6] in humans. To the best of current knowledge its most important function is to activate the anaphase promoting complex (APC/C), a large 11-13 subunit complex that initiates chromatid separation and entrance into anaphase .

  4. 1,3-Bisphosphoglyceric acid - Wikipedia

    en.wikipedia.org/wiki/1,3-Bisphosphoglyceric_acid

    1,3-Bisphosphoglyceric acid (1,3-Bisphosphoglycerate or 1,3BPG) is a 3-carbon organic molecule present in most, if not all, living organisms.It primarily exists as a metabolic intermediate in both glycolysis during respiration and the Calvin cycle during photosynthesis. 1,3BPG is a transitional stage between glycerate 3-phosphate and glyceraldehyde 3-phosphate during the fixation/reduction of ...

  5. Restriction point - Wikipedia

    en.wikipedia.org/wiki/Restriction_point

    Steps of the cell cycle. The restriction point occurs between the G 1 and S phases of interphase.. The restriction point (R), also known as the Start or G 1 /S checkpoint, is a cell cycle checkpoint in the G 1 phase of the animal cell cycle at which the cell becomes "committed" to the cell cycle, and after which extracellular signals are no longer required to stimulate proliferation. [1]

  6. Life history theory - Wikipedia

    en.wikipedia.org/wiki/Life_history_theory

    A life history strategy is the "age- and stage-specific patterns" [2] and timing of events that make up an organism's life, such as birth, weaning, maturation, death, etc. [3] These events, notably juvenile development, age of sexual maturity, first reproduction, number of offspring and level of parental investment, senescence and death, depend ...

  7. Environmental Health

    images.huffingtonpost.com/2009-01-27-1476069x82.pdf

    operation [1]. Of those there are eight in the United States (US) [2]. In 2003 the EPA reported in the Federal Register that on average approximately seven tons of mercury were missing from each plant in the year 2000 [3]. These chlor-alkali plants have an average of fifty-six cells, each containing as much as 8,000 pounds of mercury [4] and,

  8. List of unsolved problems in biology - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    1 General biology. Toggle General biology subsection ... 1.1 Evolution and origins of life. 1.2 Biochemistry and cell biology. 1.3 Other. ... How did the mitochondria ...

  9. Biochemical switches in the cell cycle - Wikipedia

    en.wikipedia.org/wiki/Biochemical_switches_in...

    The cell cycle is a series of complex, ordered, sequential events that control how a single cell divides into two cells, and involves several different phases. The phases include the G1 and G2 phases, DNA replication or S phase, and the actual process of cell division, mitosis or M phase. [1]