biology quiz

• 1590's Hans and Zacharias Janssen
• Hans and Zacharias Janssen - dutch spectacle-makers invented the first so called compound microscope
• the cell theory

  -provides insights into the structure, function, and origin of living organisms.
• the cell theory

  -describes the basic unit of life.
• 1665 - Rovert Hooke
• Robert Hooke

  -used a compound microscope to observe cork cells.
• Robert Hooke

  -he termed 'cellulae" (latin: small rooms)
• 1674 - Antonie Van Leewenhoek
• Antonie Van Leeuwenhoek

  -first to observe single-celled microorganisms "animalcules"
• 1831 - Robert Brown
• Robert Brown

  • scottish botanist, he termed this structure the "nucleus" from the latin word for "kernel"
• 1835 - Felix Dujardin
• Felix Dujardin

  -french biologist who said that protozoans contains fluid called "sarcode"
• Felix Dujardin

  -sarcode recognize as protoplasm or cytoplasm of the cell
• 1839 - Jan Evangelist Purkinje
• Jan Evangelista Purkinje

  -Czech anatomist and physiologist who coined the term protoplasm to describe the contents of a cell
• 1838 - Matthias Jacob Schleiden
• Matthias Jacob Schleiden

  -German botanist first proposed that the cell is the basic unit structure in plants.
• 1839 - Theodor Schwann
• Theodor Schwann

  -German physiologist and zoologist who proposed that the cell is the basic unit structure in animals.
• Mattias Schleiden & Theodor Schwann

  • co-founded the cell theory
• Matthias Schleiden & Theodor Schwann

  1. all living things are composed of one or more cells.
• Matthias Schleiden & Theodor Schwann

  2. the basic unit of life is the cell.
• 1855 - Rudolf Virchow
• Rudolf Virchow

  -German scientist who stated the principle of "omnis cellula e cellula".
• the postulates of cell theory

  1. all living things are composed of one or more cells.
• the postulates of cell theory

  2) the basic unit of life is the cell
• three postulates of cell theory

  3) all cells arise for pre-existing cells.
• modern version of cell theory

  1. energy flow occurs within cells.
• modern version of cell theory

  2) heredity information (DNA) is passed on from cell to cell
• modern version of cell theory

  3) all cells have the same basic chemical composition
• 1862 - Louis Pasteur
• 1882 - Walther Flemming
• 1931 - Ernst Ruska
• Louis Pasteur

  -discovered that heat kills germs in liquids, preventing bacterial growth, food spoilage and foodborne illnesses.
• Walther Flemming

  -meticulous observations of cell division, particularly his detailed studies of chromosomal behavior during mitosis.
• Ernst Ruska

  -using several such lenses in a series, he invented the first electron microscope.