CELLWALL Meaning and
Definition
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Cell wall refers to the rigid outer layer found in the cells of many organisms, providing structure, support, and protection. It is primarily composed of cellulose, a complex carbohydrate that forms a network of fibers. This extracellular matrix maintains cell shape and prevents excessive expansion of the cell under osmotic pressure.
In plant cells, the cell wall is a prominent feature surrounding the plasma membrane. It is responsible for maintaining the plant's overall rigidity and providing support for vertical growth. Moreover, the cell wall plays a crucial role in enabling proper cell-to-cell communication and tissue organization. It acts as a physical barrier protecting the plant from pathogens, parasites, and environmental stresses such as fluctuations in temperature and humidity.
In bacterial cells, the cell wall is also present and provides stability and shape. However, its composition slightly differs, with peptidoglycan being a major component. This layer assists in preventing osmotic lysis and protects the bacterium from harsh environmental conditions.
While most animals lack a cell wall, some protozoa and fungi possess cell walls. Fungal cell walls often consist of chitin, another type of complex carbohydrate, which grants rigidity and protection against harmful agents.
In summary, the cell wall is an essential structure found in various organisms, offering structural support and protection against external factors. Its composition may differ across different species but serves the primary purpose of maintaining cell integrity.
Common Misspellings for CELLWALL
- cell wall
- cellw all
- Cellwa ll
- Cellwa lll
- Cellwal l
- C ellwall
- Ce llwall
- Cellwlal
Etymology of CELLWALL
The word "cellwall" is a compound word derived from "cell" and "wall".
The term "cell" comes from the Latin word "cella", which means "small room" or "cell". It was used to describe the basic unit of life and was first used in its biological context by the English scientist Robert Hooke in the 17th century.
The word "wall" originated from the Old English word "weall", which means "a rampart" or "a barrier". It refers to a structure that surrounds or encloses something.
Combining those two elements, "cellwall" describes the outer layer or boundary that surrounds the individual cells of living organisms, providing structural support and protection.
