Sharing is caring!

Hi Readers:

Today we will discuss about the Differences Between Cell Wall and Cell Membrane.

While doing that we will focus on to its structure, function, and location only.  So without further ado, let’s get started…..

 

CELL WALL

Differences Between Cell Wall and Cell Membrane have the following:

First let us go through the definition:
The non-living, Permeable, rigid and thick outer envelope of plant cell composed of Cellulose, Hemicellulose, Lignin, Pectin and Suberin is known as cell wall.

Check out the Video explanation from our YouTube Channel:

To see more videos like this please click here

The Structural features of a cell are as follows:   

  1. It is present only in plant cell
  2. It is composed of composed of Cellulose, Hemicellulose, Lignin, Pectin and Suberin
  3. Matured cell wall is composed of two parts, which are in the following
    Primary cell wall:  It is the thin outer most layer
    Secondary cell wall:  It is thick inner layer
  1. A cementing layer called middle lamella is present between two adjacent cells
  2. Narrow thread passes through the cell walls of two adjacent cells are called Plasmodesmata

 

 

The Functions of the cell walls are in the following

  1. It gives shapes to the cell
  2. It gives rigidity to the cell
  3. It gives mechanical strength to the cell
  4. It allows molecules to pass though in and out freely since it is permeable in nature

 

Location:  It is present in all the plant cells from Algae to Angiosperm

 

People who read this also read:  How we can differentiate between Cell wall and Cell membrane

 

Cell membrane or Plasma membrane

 

Definition:  The thin Semi-Permeable living membrane that surrounds the protoplasm of a cell.

 

To see more videos like this please click here


Structure:

Under the electron microscope the cell membrane is found to be made up of three layers- one layer of lipid is present between two layers of protein.

  1. It is living.
  2. It is liquid in nature.
  3. It is elastic in nature.
  4. It is selectively permeable.
  5. It is made up of three layers, two protein layers sandwich a fat layer.
  6. A single fat molecule has two ends one polar end and one non polar end.  The polar end facing towardsThe water and non-polar ends are facing opposite the water.

 

Fluid Mosaic Model of Cell Membrane by Singer, S.J. and Nicholson, G.L 1972 based on data on chemical analysis and data from the application of several biophysical techniques put forward following postulates.
1.   That the lipid and integral proteins are disposed in a kind of Mosaic arrangement (Joining together)
2.   Biological membranes are quasi-fluid structure in which both the lipid and integral proteins are able to perform

Translational movement with the bilayer
3.  Macromolecules present in the membrane have considerable freedom of movement (fluidity)

 

Functions:

  1. Endocytosis: Engulfing anything within the cell.
    Phagocytois:  Engulfing the solid particle.
    Pinocytosis:  Engulfing the liquid particle.
  2. Exocytosis: Throw out anything from the cell.
  3. Active Membrane Transport.
  4. Passive Membrane Transport.
  5. It protects from external injury
  6. Gives shapes to the cell
  7. It allows selected molecules to pass though in and out freely since it is selectively permeable in nature

 

Location:  It is present in all the animal cells from Protozoa to Human beings

 

If you enjoyed reading this post about Differences Between Cell Wall and Cell Membrane.  I would be very grateful if you would help it to spread by sharing on social media like Facebook, Twitter, Google+, by clicking on the share buttons below.  If you have any questions feel free to ask them in the comment section below.

 

Thank You

 

See you in our next blog     

PpG

 

    Also Read on Science Reckoner:

Sharing is caring!

The following two tabs change content below.
Hi viewers My name is Partha Pratim Goswami, (PpG) I am a teacher by profession. I have been teaching biology, chemistry and physics, sometimes mathematics also for last sixteen years. I would like to share my entire experience with all the viewers across the world through YouTube, which I think is an amazing platform to share all my experiences.

Latest posts by Partha Pratim Goswami (see all)

Leave a Reply