Question

Who coined the term "cell"?

Answer 1

Unicellular organisms are capable of independent existence and they perform essential functions of life due to the present structural and basic unit of life that is cell. Anything that is less than a complete structure of cells does not ensure independent living.

Complete answer:
While examining and experimenting with a thin slice of cork, Robert Hooke saw that the cork resembled and was identical with the structure of a honeycomb consisting of many little compartments. Cork is a substance which comes' from the hard part of the tree that is bark of a tree in the year 1665 Hooke made this observation through the components of a self-designed microscope Robert Hooke called these boxes cells.)Cell is a word that is used in Latin language for a little room The discovery of cell can be thinks or seem to be a very small and insignificant incident but it is very important in the history of science. This was the very first time that someone had observed that living things appear to consist of separate units.
Robert Hooke studied and discovered the cell from a thin slice of cork but that was the dead cell'.
Anton Van Leeuwenhoek was the first person who observed few living cells capable of moving, such as bacteria, protozoa, spermatozoa and red blood corpuscles under his own designed microscope.
Later, Robert Brown discovered the nucleus of a cell. The microscope was invented and its improvement leading to the electron microscope revealed all the structural details of the cell.
In 1838, Malthas Schleiden, a German botanist studied a large number of plants and observed that all plants are composed of different kinds of cells which form the tissues of the plant.
At the same time , another scientist Theodore Schwann (1839), a British zoologist, studied different types of animal cells and gave a report that cells had a thin outer layer which is now known as the 'Plasma membrane'. He also told and gave results based on his studies on plant tissues, that the presence of cell walls is a unique and distinguishable character of the plant cells.

Note: Viruses are an exception to cell theory as they are not made up of cells/ They are composed of nucleoprotein particles Therefore, they are not considered either living or non-living. Other exceptions are bacteria, mature RBCs, Sieve tubes, coenocytic organisms like Rhizopus.