1 / 8

Robert Brown 1700-1800 (English)

Robert Brown 1700-1800 (English). Noted that cells of plant epidermis, pollen grains, and stigmas contained certain round distinct structures called nuclei Brownian motion. Johannes Purkinje 1700-1800 (Czech). Coined the term “protoplasm” to describe the contents of the cell

ciaran-oneil
Télécharger la présentation

Robert Brown 1700-1800 (English)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Robert Brown 1700-1800 (English) • Noted that cells of plant epidermis, pollen grains, and stigmas contained certain round distinct structures called nuclei • Brownian motion

  2. Johannes Purkinje 1700-1800 (Czech) • Coined the term “protoplasm” to describe the contents of the cell • Nucleus in bird’s egg, sweat glands in the skin, nerve cells (Purkinje cells), muscle fibers (Purkinje fibers) • Use of fingerprints • Describe the movement of cilia • Use of microtome

  3. Matthias Schleiden 1800 (Deutsch/ Botanist) • “Cell is the basic unit of plants” • Each cell leads a double life, one independent/ own development and integral part of a plant • Described nucleolus

  4. Theodor Schwann 1800 (Deutsch/ Zoologist) • “Cells are organisms and entire plants and animals are aggregates of these organisms arranged according to definite laws” • Living things are composed of cells and their products • Introduced the term metabolism

  5. Rudolf Virchow 1800 (Deutsch/Pathologist) • Omnis cellula e cellula (All cells arise from pre-existing cells) • A contemporary and colleague of Jose Rizal

  6. Louis Pasteur 1800 (French) • Finally disproved spontaneous generation • “Everything in this world depends on work” • Stereochemistry • Germ Theory of Disease • Pasteurization • Vaccination

  7. CELL Theory: All organisms are composed of cells which arise only from pre-existing cells • Modern Statements of the Cell Theory • The cell is the fundamental unit of both structure and functions in all living things. • All forms of life (animal, plant, and microbial) are composed of cells and their secretions. • Cells arise from pre-existing cells. • Each cell has a life of its own in addition to its integrated role in multicellular organisms.

More Related