Cell theory

• Robert Hooke discovered cells while studying cork under a microscope.
• The cell theory was developed by Robert Hooke, Anton van Leeuwenhoek, Rudolf Virchow, Matthias Schleiden, Theodor Schwann, and others.
• Cell Theory states that all living things are made up of cells, which is the basic unit of life.
• Anton van Leeuwenhoek was the first to observe living organisms through his own handmade lenses, which he called animalcules.
• The cell is the basic unit of structure and function in all known living organisms.
• Cells are the smallest units that can be seen with an optical microscope.
• All cells come from pre-existing cells through division.
• New cells arise only from existing cells.
• All organisms are composed of one or more cells.
• Matthias Jakob Schleiden proposed that plants were composed entirely of cells.
• Virchow expanded upon this idea with his famous statement "Omnis cellula e cellula" (every cell comes from another cell).
• Robert Hooke coined the term "cell" when observing cork under a microscope.
• Hooke's observations were published in Micrographia in 1665.