Protein synthesis

Question 1

What is the protein synthesis - transduction and translation steps?

Answer 1

Through internal or external chemical messenger - dna is activated to produce a pre MRNA copy of the functional gene (transcription)

The pre-mRNA is modified to remove introns and remaining Econ’s are linked together to form mRNA.

Then the mRNA leaves the nucleares and enter a the cytoplasm

mRNA buns to ribosome that contains rRNA / which helps controls protein synthesis (translation)

Another rna , tRNA transports amino acid to subunits to the Robson where they are assmebeled into polypeptides (activation and transport.)

Question 2

Transcription:

Answer 2

1. transciption engines when transaction factors bind to promoter bear the gene
2. RNA polymerase bonds to the promoter as well and a segment of DNA unwinds
3. termination : tea option ends when the of the gene is reached and the mRNA transcript is released

Question 3

What is the function of tRNA?

Answer 3

It’s function for getting the right amino acids to the ribosome synthesis there are 40 different trans. Each one coding for a specific amino acid.

Question 4

Translation :

Answer 4

—- initiation - translation begins when an intitaTor tRNA bonds with the mRNA and start the codon in the ribosome.

Elongation

2. Another tRNA bonds to hit open A site
3. b the first amino acid detached from the tRNA at the p site and is joined to the second amino acid peptide bond.
4. Termination - translation end when the ribosome reached the stop codon and the completed polypeptide is released