Remake of History of Cells Discovery: Advancement Over Time by Yu Chen Lim https://padlet.com/celeo9472/bk3ae4uetrnifgkn For each century, post a relevant picture with comments to show how technological advancement have led to greater details in cell observation. en-us 2021-07-09 03:40:26 UTC 2023-07-20 06:07:04 UTC hello@padlet.com nadialim140308 https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642844175

Robert Hook refined the design of the compound microscope around 1665 and published a book titled Micrographia which illustrated his findings using the instrument.
]]> 2021-07-09 03:48:31 UTC https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642844175 nadialim140308 https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642847708 In the 1800s, biologists began taking a closer look at both animal and plant tissues. What they learned advanced cell theory. Scientists could easily tell that plants were completely made up of cells. That's because plant cells have a layer on the outside called a cell wall. However, this was not so obvious for animal cells, which lack a cell wall. Many scientists believed that animals were made of "globules."
 
German scientists Theodore Schwann and Mattias Schleiden studied cells. Schwann studied animal cells and Schleiden studied plant cells. These scientists found key differences between the two cell types. They had the idea that cells were the simplest units of both plants and animals.
]]> 2021-07-09 03:51:30 UTC https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642847708 nadialim140308 https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642848476
A scientist named Rudolf Virchow made an important discovery in 1855. He found that all new cells are made by existing cells. They copy themselves.
 
Later, scientists began to focus on genes. Genes tell the body how to grow and work. Chromosomes are like threads that carry genes and sit inside cells. In the 1880s, Walter Sutton and Theodor Boveri discovered the purpose of chromosomes. They are responsible for passing down genes from one generation to the next. 
]]> 2021-07-09 03:52:10 UTC https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642848476 nadialim140308 https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642849069 The discovery of the cell continued to be important for science in the 1900s. Scientists discovered stem cells. Stem cells are simple cells. They still have to develop into cells with more specific jobs. This means they can grow into many different parts of the body. They could become part of your skin or your heart, for example. Stem cells are now used to treat many conditions such as heart disease.]]> 2021-07-09 03:52:37 UTC https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642849069 nadialim140308 https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642850043 A new structure in human cells has been discovered by researchers at Karolinska Institutet in Sweden in collaboration with colleagues in the UK. The structure is a new type of protein complex that the cell uses to attach to its surroundings and proves to play a key part in cell division.]]> 2021-07-09 03:53:27 UTC https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642850043 nadialim140308 https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642853046 No one discovered cells

]]> 2021-07-09 03:55:41 UTC https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1642853046 nadialim140308 https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1645531064 2021-07-12 06:05:17 UTC https://padlet.com/celeo9472/bk3ae4uetrnifgkn/wish/1645531064