Introduction to Cells by Crizel Valencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl en-us 2024-09-30 18:32:18 UTC 2024-10-14 10:06:37 UTC hello@padlet.com https://live.staticflickr.com/5192/6936088946_7ec69bc7db_z.jpg 1590: Zacharias Janssen crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873231 Zacharias Janssen invented the microscope in 1590. It consisted of two lenses mounted inside a tube. His invention allowed other scientists to discover things about the cell.

]]> 2024-09-30 18:32:18 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873231 1665: Robert Hooke crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873234 English scientist Robert Hooke used a compound microscope to observe thin slices of cork. He noticed small box-like structures, which he called 'cells' because they reminded him of monks' cells in a monastery. This was the first time the term 'cell' was used in biology.

]]> 2024-09-30 18:32:18 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873234 Robert Hooke's Microscopic Observations crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873235 2024-09-30 18:32:18 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873235 1673: Anton Van Leeuwenhoek crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873236 Anton van Leeuwenhoek made significant improvements to the microscope. He was the first to observe and describe single-celled organisms, which he called 'animalcules'. His work with bacteria, sperm cells, and blood cells greatly advanced the study of microbiology.

]]> 2024-09-30 18:32:18 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873236 crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873237 These cells were the ones that Anton Van Leeuwenhoek saw]]> 2024-09-30 18:32:18 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873237 1838:  Matthias Schleiden crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873238 German botanist Matthias Schleiden concluded that all plant tissues are composed of cells. He proposed that the cell is the basic unit of plant structure, a crucial step towards the development of cell theory.

]]> 2024-09-30 18:32:18 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873238 Plant Cell Theory crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873241 Vegetables cells]]> 2024-09-30 18:32:18 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873241 1855: Rudolf Virchow crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873242 Rudolph Virchrow discovered that come from pre-existing cells. His famous quote 'Omnis cellula e cellula' (All cells come from pre-existing cells). This completed the classical cell theory by explaining how cells reproduce and where new cells come from became a fundamental principle in biology.

]]> 2024-09-30 18:32:18 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3146873242 1839: Theodore Schwann crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147066119 Theodor Schwann extended Schleiden's work to animal tissues. He concluded that all animal tissues are also composed of cells, unifying the understanding of plant and animal structures.

]]> 2024-09-30 20:25:38 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147066119 Cell Theory crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147114232 2024-09-30 20:56:27 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147114232 Modern Cell Theory crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147118722 Since the formation of classical cell theory, further studies on cells with the advancement of microscope have led to the formation of the modern cell theory, which has three main additions:

  1. Genetic material (DNA) is passed on from one cell to another during cell division

  2. All cells have the same basic chemical composition

  3. Energy flow occurs within cells

]]> 2024-09-30 20:58:58 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147118722 What are the characteristics that make something “alive”? crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147143325 2024-09-30 21:18:11 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147143325 Levels of Cellular Organization crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147144224 From a single organelle to the entire biosphere, living organisms are parts of a highly structured hierarchy.

]]> 2024-09-30 21:19:37 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147144224 Animal Cells crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147151711 2024-09-30 21:28:46 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147151711 Plant Cells crizelvalencia https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147151926 2024-09-30 21:29:09 UTC https://padlet.com/vcisonlinejhs/mee7qts79zlxzuvl/wish/3147151926