Essay on A Study On The Cell

834 Words Oct 2nd, 2015 4 Pages
The cell is defined as the smallest unit of life. It is originated from a Latin word cella meaning ‘small room’ a word used by Hooke (in the year 1665 while observing a cell with the microscope he built by himself) to describe the cells. The cell is considered as a living thing because it has the ability to metabolize, grow and reproduce. Before the invention of microscope, it was difficult to talk about cells as they were tiny and so not visible with the naked eyes but in the 17th century after the invention of the microscope, Robert Hooke and Anton van Leuwenhoek (1675) were able to see and draw the first cells.

In about 1840 to 1855 some German scientist like Matthias Schleiden, Theodor Schwann, and Rudolph Virchow came up with an idea was called ‘Cell Theory’ which states that:
a. living things are made up of one or more cells.
b. Cells are the smallest unit of an organism.
c. Cells come only from existing cells.
Although, we know that every living thing is made up of cells, all cells within the same organism show great diversity in size, shape, and internal organization depending on the functions they are ought to carry out. There are over 1000 different cells in our body, but they all have different shapes and functions depending on the function they are to carry out in the body for example: the structure of the muscle cell is not the same as the red blood cells because they have different functions in…

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