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  2. Cell theory - Wikipedia

    en.wikipedia.org/wiki/Cell_theory

    2. The cell is the most basic unit of life. Schleiden's theory of free cell formation through crystallization was refuted in the 1850s by Robert Remak, Rudolf Virchow, and Albert Kolliker. [5] In 1855, Rudolf Virchow added the third tenet to cell theory. In Latin, this tenet states Omnis cellula e cellula. This translated to: 3.

  3. 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.

  4. Life - Wikipedia

    en.wikipedia.org/wiki/Life

    The cell is the structural and functional unit of life. Smaller organisms, including prokaryotes (bacteria and archaea), consist of small single cells. Larger organisms, mainly eukaryotes, can consist of single cells or may be multicellular with more complex structure. Life is only known to exist on Earth but extraterrestrial life is thought ...

  5. List of unsolved problems in biology - Wikipedia

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

    Homochirality is an obvious characteristic of life on Earth, yet extraterrestrial samples contain largely racemic compounds. [7] It is not known whether homochirality existed before life, whether the building blocks of life must have this particular chirality, or whether life must be homochiral at all. [8] [9] What do all the unknown proteins do?

  6. Woman accused of stowing away on flight from NY to Paris ...

    www.aol.com/news/woman-accused-stowing-away...

    The woman accused of stowing away on a Delta flight from New York to Paris was arrested again, this time while reportedly trying to get into Canada.

  7. Do biotin supplements actually help with hair growth? Experts ...

    www.aol.com/biotin-supplements-actually-help...

    For those in search of growing strong, healthy nails and thick, full hair, can biotin supplements actually offer a solution to common beauty concerns?. Biotin deficiency is a relatively uncommon ...

  8. Biology - Wikipedia

    en.wikipedia.org/wiki/Biology

    Different elements can combine to form compounds such as water, which is fundamental to life. [32] Biochemistry is the study of chemical processes within and relating to living organisms . Molecular biology is the branch of biology that seeks to understand the molecular basis of biological activity in and between cells, including molecular ...

  9. Chess' future looms over the world championship, once again ...

    www.aol.com/chess-future-looms-over-world...

    The 2024 World Chess Championship is set to kick off this week, a showdown between 18-year-old Gukesh Dommaraju of India and reigning champion Ding Liren of China.