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2. Tree of life (biology) - Wikipedia

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

   In 2015, the third version of TimeTree was released, with 2,274 studies and 50,632 species, represented in a spiral tree of life, [29] free to download. In 2015, the first draft of the Open Tree of Life was published, in which information from nearly 500 previously published trees was combined into a single online database, free to browse and ...

3. Biotic index - Wikipedia

   en.wikipedia.org/wiki/Biotic_index

   Then an identification key is used to help determine which category or group the organism belongs in and allows a numerical value be assigned to that organism. A worksheet is then used to calculate the final value or score of all the organisms found. Depending upon the worksheet's equations, the score determines the condition of the water quality.

4. Cell (biology) - Wikipedia

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

   Cell Biology in "The Biology Project" of University of Arizona. Centre of the Cell online; The Image & Video Library of The American Society for Cell Biology Archived 2011-06-10 at the Wayback Machine, a collection of peer-reviewed still images, video clips and digital books that illustrate the structure, function and biology of the cell.

5. List of academic databases and search engines - Wikipedia

   en.wikipedia.org/wiki/List_of_academic_databases...

   A full-text aggregation of more than 180 scientific journals publishing current research in Biodiversity Conservation, Biology, Ecology, Environmental Science, Entomology, Ornithology, Plant Science, and Zoology. Free abstract & references, Open Access titles, and Subscription Available from BioOne [27] Bioinformatic Harvester: Biology ...

6. Kingdom (biology) - Wikipedia

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

   This six-kingdom model is commonly used in recent US high school biology textbooks, but has received criticism for compromising the current scientific consensus. [13] But the division of prokaryotes into two kingdoms remains in use with the recent seven kingdoms scheme of Thomas Cavalier-Smith, although it primarily differs in that Protista is ...

7. 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.

8. Directionality (molecular biology) - Wikipedia

   en.wikipedia.org/wiki/Directionality_(molecular...

   Directionality, in molecular biology and biochemistry, is the end-to-end chemical orientation of a single strand of nucleic acid. In a single strand of DNA or RNA, ...

9. Development of the human body - Wikipedia

   en.wikipedia.org/wiki/Development_of_the_human_body

   Development of the human body is the process of growth to maturity.The process begins with fertilization, where an egg released from the ovary of a female is penetrated by a sperm cell from a male.