The plasma membrane consists mainly of:[2010]a)phospholipids embedded ...
Plasma membrane comprises mainly proteins embedded in a phospholipid bilayer. Protein molecules occur at places both inside and outer side of the lipid bilayer.
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The plasma membrane consists mainly of:[2010]a)phospholipids embedded ...
Plasma membrane is made up of phospholipid bilayer ...it is know as selectively permeable membrane bcoz it control the entry nd exit of materials ans it protect the cell and provide shape of cell..
The plasma membrane consists mainly of:[2010]a)phospholipids embedded ...
Composition of the Plasma Membrane:
The plasma membrane is primarily composed of a phospholipid bilayer embedded with proteins. This structure is crucial for maintaining the integrity of the cell and regulating the movement of substances in and out of the cell.
Phospholipid Bilayer:
- The phospholipid bilayer is made up of two layers of phospholipid molecules. Each phospholipid molecule consists of a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails.
- The hydrophilic heads face outward towards the extracellular and intracellular environments, while the hydrophobic tails are sandwiched in between.
Proteins Embedded in the Bilayer:
- Proteins are interspersed throughout the phospholipid bilayer. These proteins serve various functions such as transportation of molecules, cell signaling, and structural support.
- Integral proteins span the entire lipid bilayer, while peripheral proteins are attached to the surface of the membrane.
Function of the Plasma Membrane:
- The plasma membrane acts as a selective barrier, allowing only certain substances to pass through while blocking others.
- It also plays a role in cell communication, adhesion, and recognition.
In conclusion, the plasma membrane primarily consists of a phospholipid bilayer embedded with proteins. This composition is essential for the proper functioning of the cell and maintaining cellular homeostasis.
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