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This video we will discuss about synthesis and transport of proteins, structure of cell membrane and the qtp enzyme.
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First, the synthesis and transport of protein will be discussed.
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The synthesis of proteins in the cell involves two processes.
00:29
First is transcription and the second is translation.
00:40
The process of transcription involves synthesis of rna molecule from the dna molecule, whereas the process of translation involves synthesis of peptide chain from the rna molecule that further undergoes folding to form the proteins.
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The process of transcription occurs in the nucleus of the cell, whereas the process of the of translation occurs in the ribosomes in the cytoplasm of the cell.
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Thus, when the rna molecules are transcribed in the nucleus, they are transported to the rough endoplasmic reticulum or rer.
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Rer is a continuous membrane system that is associated with the the ribosomes.
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Thus, the rna transcribed in the nucleus is translated into the proteins and the ribosomes that are attached to the rer.
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Once the protein is translated into the rer, it is transported to the golgi body or golgi complicate.
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Golgi body is a membrane bound organally wherein the synthesized protein is packed into the vesicles.
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Thus, the golgi body functions to pack the proteins into the vesicles.
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The vesicles are the small, round shaped membrane bound structures that that are responsible for transportation of molecules within the cell.
03:35
The proteins synthesized are transported by the vesicles to the cell membrane that form a part of the membrane proteins.
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Now the structure of the cell membrane will be discussed.
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The membrane of the cell is responsible for separating the interior environment of the cell from its exterior environment.
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The structure of cell membrane comprises of three components.
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The first one is the phospholipid bilayer.
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The second one is, proteins and the third component is carbohydrates...