what is cell
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➢ A cell is defined as the smallest, basic unit of life that is responsible for all of life’s processes.
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- A cell is the structural and fundamental unit of life. The study of cells from its basic structure to the functions of every cell organelle is called Cell Biology. Robert Hooke was the first Biologist who discovered cells.
- Robert Hooke discovered the cell in 1665. Robert Hooke observed a piece of bottle cork under a compound microscope and noticed minuscule structures that reminded him of small rooms. Consequently, he named these “rooms” as cells. However, his compound microscope had limited magnification, and hence, he could not see any details in the structure. Owing to this limitation, Hooke concluded that these were non-living entities.
- Cells are similar to factories with different labourers and departments that work towards a common objective. Various types of cells perform different functions. Based on cellular structure, there are two types of cells:→Prokaryotes →Eukaryotes
- The cell structure comprises individual components with specific functions essential to carry out life’s processes. These components include- cell wall, cell membrane, cytoplasm, nucleus, and cell organelles.
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➛ A cell is a small unit, structural, functional & biological unit in all living organisms.
- Robert Hooke was the first person who discovered Cell in the year 1665.
- The Study of Cells is termed as Cytology.
- Cell is covered by Cell Wall in the plants or in prokaryotes. Whereas, Cell is covered by Plasma Membrane in the animals. They protect the Cell & maintain electric potential of the Cell.
- Cells are made up of some organic molecules such as: proteins, lipids & carbohydrates.
➛ Cell can be divided into 4 parts. They are as follows:
- Connective Tissue Cells.
- Nerve Cells.
- Epithelial Cells.
- Muscle Cells.
➛ Following are the main functions of the Cell:
- To provide a basic structure for the body.
- They are basically divided into many parts, from which each provides a different function for the body.
- They convert essential nutrients into energy.
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