Difference between Cell Wall and Cell Membrane

Cell Wall vs. Membrane

What is Difference between Cell Wall and Cell Membrane? The plasma membrane and the cell wall are two integral parts of the cells. The cell is the smallest structural and functional unit that living beings possess and are microscopic, meaning that they cannot be seen with the naked eye. They were discovered in 1665 by Robert Hooke, who decided to name them “cells” (a word derived from the Latin cellular, cells).

Difference between Cell Wall and Cell Membrane

There are two types of cells, prokaryotes and eukaryotes. The former are self-sufficient and some examples of them are bacteria and archaic. On the other hand, the cells of all multicellular beings are eukaryotic cells. Both animals and plants have eukaryotic cells, although they have different structures; among which two are of great importance: the plasma membrane and the cell wall.

Cell Membrane

The cell or plasma membrane is essentially a barrier that separates the inside of the cells from the outside environment. T is also known as a cell membrane.

It is present in all classes of cells, including plants and animals. The main function of this membrane is to regulate what enters and leaves the cell. It also gives shape and ensures that the parts of the same do not come out.

The cell membrane consists of a thin layer of amphipathic phospholipids. It consists of lipid bilayers, which are basically two layers of lipids; also known as fats. These phospholipids are arranged in such a way that they contribute to regulate the entry and exit of water in the cell, which means that the membrane acts as a shield that regulates the water intake.

Phospholipids also contain integrated proteins that allow certain elements such as nutrients to enter and exit the cell, depending on the needs of the cell.

Similarly, the cell membrane participates in conduction, communication and cellular signaling. In addition, it plays an important role in phagocytosis (cellular feeding) and pinocytosis (fluid intake). D plays an active role in communicating with other cells to identify those that might die soon. It is also the one that allows the cells to join in groups, thus forming the tissues.

Cellular Wall

The cell wall, on the other hand, is not found in animal cells or protozoa. It is present in plant cells as well as in bacteria, fungi, algae and some archaea. It is an integral part of these cells to be as its name suggests a wall.

It is a hard layer that surrounds the entire cell and can be rigid or flexible depending on the type. The cell wall is outside the cell membrane. In plants, it is composed of cellulose; while in bacteria, fungi, algae and archaea, it consists of peptidoglycan, chitin, glycoproteins, polysaccharides or pseudopeptidoglucan; depending on the case.

The main purpose of a cell wall is to provide protection and shape to the cell. D to rigidity to it and allows it to maintain its shape even under pressure, and especially when there is a lack or excess of water in it.

As well as the cell membrane, the cell wall is also responsible for what enters and leaves the cell. It controls all transfer of substances between the inside and the outside of it. Cell walls have some holes called plasmodesms. They are responsible for allowing the nutrients to enter the cell, the residues leave and the ions pass through.

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