Explain in brief about the cell membrane, Biology

Assignment Help:

Explain in brief about the Cell Membrane

All cells, whether prokaryotic or eukaryotic, are bound by a limiting membrane called the cell membrane or the plasma membrane. The cell membrane gives shape and mechanical strength to the cell and protects it from the environment. The cell membrane is composed of lipids and proteins, and in many cases about 2-5% carbohydrates are also present. These carbohydrates are linked to the proteins or lipids. In plants, the cell membrane is covered by a rigid cell wall whose major component is cellulose. In fungi, the cell wall is made of chitin. Among the various models proposed for the plasma membrane, the most satisfactory model that is generally accepted is the fluid mosaic model of S.J. Singer and G.L.  Nicolson (1972). This model satisfactorily accounts for several of the observed properties of the plasma membrane.

 


Related Discussions:- Explain in brief about the cell membrane

Are nematodes diploblastic or triploblastic animals, Are nematodes diplobla...

Are nematodes diploblastic or triploblastic animals? Just like platyhelminthes, nematodes are triploblastics, i.e., they show three germ layers (ectoderm, mesoderm and endoder

Explain the colorimetric method glucose estimation, Explain the Colorimetri...

Explain the Colorimetric Method Glucose Estimation? Alkaline copper reduction methods are by far the most commonly used methods for glucose estimation. This time honoured metho

Ecosystem, what is the structure of ecosystem

what is the structure of ecosystem

Explain what is mortality in coronaw artery disease, Explain what is Mortal...

Explain what is Mortality in coronaw artery disease ? Marked prematurity and extensive atherosclerosis leads to markedly higher mortality in young Asian Indians compared to oth

Define calcium - the macronutrient, Define Calcium - The Macronutrient? ...

Define Calcium - The Macronutrient? Calcium is an important mineral found mainly in bone and teeth. It is widely distributed in food substances such as milk, cheese, egg yolk,

What is flap tearing, What is Flap tearing Poor preoperative surgical p...

What is Flap tearing Poor preoperative surgical planning can result in flap of small size with inadequate exposure of the underlying bone. In an effort to increase the visibili

Define modulation of transcription of cell cycle proteins, Modulation of th...

Modulation of the transcription of cell cycle proteins? The 1,25-(OH),D  compound (calcitriol), is present in the blood complexes to the vitamin D-binding  protein, a specific

Define the enzyme function of vitamin c, Define the Enzyme Function of Vita...

Define the Enzyme Function of Vitamin C? Vitamin C acts as an electron donor for 11 enzymes. Three of those enzymes are found in fungi but not in humans. Of the eight remainin

Traditionally value biological resources, However, according to conventiona...

However, according to conventional principles of economic analysis it is necessary that a resource is used for it to acquire a value. Consequently economists traditionally value bi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd