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The cell is the basic functional and structural unit of life.

The cell is the basic functional and structural unit of life. It plays a vital role in all biological activities and includes membrane-bound organelles, which are involved in various specialized individual functions to keep the cell alive and active. The cell was first observed and discovered by English natural philosopher – Robert Hooke in the year 1665. The word cell is originated from Latin, which means “small room”. Explore more:  Cells Based on the presence of the nucleus and other membrane-bound cellular organelles, the cell is further classified into prokaryotic, eukaryotic, plant and  animal cells . Also Refer:  Difference between Prokaryotic and Eukaryotic Cells Bacterial Cell Bacteria are unicellular, living organisms which have been grouped into the prokaryotic cell, as these organisms lack a few membrane-bound organelles and the nucleus, which is considered to be one of the most important cell organelles. According to the evolution theory, bacteria were the very first organisms to evolve on earth and therefore, this group of living organisms is considered as one of the oldest forms of life on earth. Explore more:  Bacteria Plant Cell Plant cells are eukaryotic cells that vary in several fundamental factors from an animal cell. Similar to the animal cell, the plant cell comprises the nucleus and other membrane-bound cellular organelles. Explore more:  Plant cell Animals Cell Animal cells are eukaryotic cells that contain a membrane-bound nucleus. They are different from plant cells in several fundamental factors. These cells lack a cell wall, plastids and other cellular organelles. Explore more:   Facts about  Animal cell This was a brief introduction about the plant, animal and bacterial cells. Apart from this, there are many other facts which prove their differences. Some key differences between the plant, animal and bacterial cells are listed below in a tabular column.

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Are of different shapes- cocci, bacillus, vibrio, spirilla.

Both sexual and asexual mode of reproduction.

Sexual reproduction in higher animals and asexual in lower animals.

Both sexual and asexual mode of reproduction.