when did the scientists discover cells? And how?

Question

and where does cell come from?
how do cells live in living things?
why do living things have cells?

thanks for answering;)
have a nice day;D

Answer 1

- They were first described in 1665 in a book by Robert Hooke.
- They are often called the building blocks of life.
- There are two types of cells: eukaryotic and prokaryotic. Prokaryotic cells are usually independent, while eukaryotic cells are usually found in multicellular organisms.

According to Wikipedia: http://en.wikipedia.org/wiki/Cell_%28biology%29
"The word cell comes from the Latin cellula, meaning, a small room. The descriptive name for the smallest living biological structure was chosen by Robert Hooke in a book he published in 1665 when he compared the cork cells he saw through his microscope to the small rooms monks lived in."

All living things that we know of, except for viruses, are cellular based creatures. The cell is the fundamental container for life processes. Think of cells like the framework that holds your house up.

Cells have a lot of complex things going on inside of them and they store energy and nutrients in various organelles; organ like parts of the cell. The cell wall or membrane is what holds those parts and pieces together. In our bodies it is important to keep the blood pH level constant to avoid excess material, like water, from infiltrating the cell and destroying it. The cell membrane is semi-permeable; meaning that it can let some things past and hold out others; how it does this is just one of the processes of life.

A virus is a small chain of molecules including DNA in its free state it is harmless, unable to breed and dormant. A virus has to infiltrate a cell and hijack that cell's operation to breed. AIDS is so dangerous because it likes to hijack primary cells in our bodies’ immune response systems which are used by the white blood cells to identify diseases.

http://en.wikipedia.org/wiki/Prokaryote
http://en.wikipedia.org/wiki/Eukaryote

According to Wikipeida: http://en.wikipedia.org/wiki/Robert_Hooke
“Robert Hooke, FRS (July 18, 1635 – March 3, 1703) was an English polymath who played an important role in the scientific revolution, through both experimental and theoretical work…

In 1665 he published a book entitled Micrographia which contained a number of microscopic and telescopic observations, and some original observations in biology. Hooke coined the biological term cell, so called because his observations of plant cells reminded him of monks' cells which were called "cellula." He is often credited with the discovery of the cell, although his microscope was very basic.

The hand-crafted, leather and gold-tooled microscope that Hooke used to make the observations for Micrographia, originally made by Christopher **** in London, is on display at the National Museum of Health and Medicine in Washington, DC. Also in 1665 he gained appointment as Professor of Geometry at Gresham College. Hooke also achieved fame as Surveyor to the City of London and chief assistant of Christopher Wren, helping to rebuild London after the Great Fire in 1666. He worked on designing the Monument, Royal Greenwich Observatory and the infamous Bethlem Royal Hospital (which became known as 'Bedlam').”

Answer 2

the scientists are Theodor Schwann - Matthias Schleiden - Rudolph Virchow - Robert Hooke -Anton van Leeuwenhoek -Lorenz Oken -Robert Brown Gerty Theresa cori Carl Ferdinand Hans adlof krebs Rita levi montalcini Stanley cohen Joan wright goodman Christiane nusslein volhard Eliane fuchs