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Teoria Celular

Teoria Celular, or the Cell Theory, is a fundamental scientific theory in biology that describes the properties of cells, the basic unit of life. It was first developed in the mid-19th century and has since evolved with advancements in microscopy and molecular biology. The theory states that all living organisms are composed of cells, cells are the basic unit of life, and all cells arise from pre-existing cells. This concept has been pivotal in understanding the structure and function of all living organisms.

Creation Time:2024-07-18 15 key nodes English

The Timeline

1665 — 2020

  1. 1665

    Robert Hooke's Discovery of Cells

    Robert Hooke, using a primitive microscope, observed the structure of cork and coined the term "cell" to describe the box-like structures he saw. This marked the first recorded observation of cells.
  2. 1674

    Antonie van Leeuwenhoek's Observations

    Antonie van Leeuwenhoek, using a more advanced microscope, observed and described living cells, including bacteria and protozoa, which he referred to as "animalcules."
  3. 1831

    Robert Brown's Nucleus Discovery

    Robert Brown identified the nucleus within plant cells, highlighting the importance of this structure in cellular function.
  4. 1838

    Matthias Schleiden's Plant Cell Theory

    Matthias Schleiden proposed that all plants are composed of cells, emphasizing the cell as the fundamental unit of plant structure and function.
  5. 1839

    Theodor Schwann's Animal Cell Theory

    Theodor Schwann extended Schleiden's theory to animals, concluding that all living things are composed of cells, thus forming the basis of the unified Cell Theory.
  6. 1855

    Rudolf Virchow's Omnis Cellula e Cellula

    Rudolf Virchow famously stated "Omnis cellula e cellula" (all cells come from pre-existing cells), further solidifying the Cell Theory by explaining cell division.
  7. 1879

    Walther Flemming's Mitosis Discovery

    Walther Flemming described the process of mitosis, the division of a cell nucleus, providing insight into how cells replicate.
  8. 1931

    Invention of the Electron Microscope

    The invention of the electron microscope by Ernst Ruska allowed scientists to observe cellular structures in much greater detail, revolutionizing cell biology.
  9. 1953

    Watson and Crick's DNA Model

    James Watson and Francis Crick proposed the double helix structure of DNA, explaining how genetic information is stored and replicated in cells.
  10. 1962

    Nobel Prize for DNA Structure Discovery

    Watson, Crick, and Maurice Wilkins were awarded the Nobel Prize in Physiology or Medicine for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material.
  11. 1970

    Endosymbiotic Theory

    Lynn Margulis proposed the endosymbiotic theory, suggesting that certain organelles, such as mitochondria and chloroplasts, originated from free-living bacteria that were engulfed by ancestral eukaryotic cells.
  12. 1981

    Discovery of Ribozymes

    Thomas Cech and Sidney Altman discovered ribozymes, RNA molecules with catalytic properties, indicating that RNA could play both genetic and catalytic roles in cells.
  13. 2003

    Completion of the Human Genome Project

    The Human Genome Project was completed, providing a comprehensive map of all human genes and advancing the understanding of cellular genetics and molecular biology.
  14. 2012

    CRISPR-Cas9 Genome Editing

    The development of CRISPR-Cas9 technology by Jennifer Doudna and Emmanuelle Charpentier revolutionized genetic engineering, allowing precise editing of cellular DNA.
  15. 2020

    Nobel Prize for CRISPR-Cas9

    Jennifer Doudna and Emmanuelle Charpentier were awarded the Nobel Prize in Chemistry for their development of the CRISPR-Cas9 genome editing technology.

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