Question

Trace the correct pathway of protein produce from protein factories

Answer 1

Explanation:

Proteins destined to be secreted move through the secretory pathway in the following order: rough ER → ER-to-Golgi transport vesicles → Golgi cisternae → secretory or transport vesicles → cell surface (exocytosis) (see Figure 17-13). Small transport vesicles bud off from the ER and fuse to form the cis-Golgi reticulum.

Answer 2

Secretary pathway of protein production:

Rough endoplasmic reticulum → transport vesicles → Golgi apparatus→Golgi Cisternae → transport vesicles → Outer cellular surface .

Concept

Protein synthesis is two steps process :

• 1) Transcription
• 2) Translation.

1)Transcription is the transfer of genetic data of  DNA to mRNA (Messenger RNA) .

It occurs in three steps resembles to polymer synthesis via free radical mechanism:

I) Initiation

II) Elongation

III) Termination.

2) In  Translation , mRNA transfers the genetic data to the transfer RNA (tRNA) and ribosomes which will work further to produce proteins.

After this the genetic data follows the secretary pathway

Rough endoplasmic reticulum → transport vesicles → Golgi apparatus →Golgi Cisternae → transport vesicles → Outer cellular surface .

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