1. CELL MEMBRANE
NAME:- BINDU KUNDU
2ND YRAR ; 4TH SEMESTER
ROLL NO :- 18601915029

2.  ENVELOPE SURROUNDING THE CELL .
PROTECTIVE BARRIER
OF CELL
MAIN CAUSE OF A
PARTICULAR STRUTURE
OF DIFFERENT TYPE OF
CELLS
CELL MREMBRANE
ABOUT THE CONCEPT OF CELL MEMBRANE

3. cell membrane
Proteins(20-70%) lipids(20-79%) carbohydrate(1-5%)
peripheral m. proteins phospholipids glycoproteins
Integral proteins glycosphingolipids glycolipids
cholesterol
CONTITUTENT OF CELL
MEMBRANE

4. Lipids(bilayar)

7. MEMBRANE PROTIENS

8. Integral membrane protein :_
1. Chanel protein
2. Carrier protein
3. Linker protein
4. Receptor protein
Peripheral protein:-
1. Second messenger protein
2. Cytoskeletal protein
TYPE OF PROTEIN IN CELL
MEMBRANE

9.  they are found on the outside surface of cells and are
bound either to proteins =forming glycoproteins
 bound to lipids =forming glycolipids.
 These carbohydrate chains may consist of 2-60
monosaccharide units and can be either straight or
branched.
CARBOHYDRATE

10.  Along with membrane proteins, these carbohydrates form
distinctive cellular markers, that allow cells to recognize each
other.
 These markers are very important in the immune system.
 allowing immune cells to differentiate between body cells.
 which they shouldn’t attack.
 Identify foreign cells or tissues or substances .
The IMPORTANCE OF
CARBOHYDREATE ON CELL
MEMBRANE

11. Component Location
 Phospholipids Main fabric of the membrane
 Cholesterol Tucked between the hydrophobic tails of
the membrane phospholipids
 Integral proteins Embedded in the phospholipid bilayer;
 Peripheral proteins On the inner or outer surface of the
phospholipid bilayer
 Carbohydrates Attached to proteins or lipids on the
 extracellular site of membrane.
The components of the plasma
membrane

13.  mobility of the cell.
 fluidity of the cell.
 exocytosis.
 Endocytosis.
 Membrane bio-genesis.
 Transport of substances.
 Identification of substances.
 Helps in biological activities .
Main functions of cell membrane

14.  PAGE – 650; U.SATYANARAYANA, U.CHAKRAPANI;
BIOCHEMISTRY .
 PAGE – 321 ;R.K. MURRAY ; HARPER’S ILLUSSTRATED
BIOCHEMISTRY.
 PAGE-- 28 ; ANNE WAUGH, ALLISON GRANT; ROSS AND
WILSON ANATOMY AND PHYSIOLOGY IN HEALTH AND
ILLNESS.
-:THANK YOU :-
BIBLOGRAPHY