Protein Synthesis Flashcards
What is the process of Translation ?
The creation of a polypeptide chain
Via mrna base sequences and complementary tRna.
Where does the ribosome start at at the initial phase of translation in mrna ?
At the start codon
Why is tRna able to bind to mRna and how does it align itself ?
tRna has complementary anticodon to mRna’s codon
Aligns opposite to mRna, held via ribosome
What happens to the ribosome as each tRna molecule is binded to mRna ?
It moves along the mRna sequence
What molecule does tRna bring along ?
A specific amino acid
How does an amino acid create a polypeptide chain ?
Joins adjacent to previous amino acid
Bonded via peptide bonds
Catalysed by enzyme and ATP
Repeat until polypeptide formed
Why does translation stop ?
Ribosome (moving along) reaches stop codon on mRna chain
STOP codon does not code for any amino acids
Ribosome detaches
What happens after the process of translation ?
Polypeptide chain formed
Enters golgi apparatus for modification
Outline role of organelles in production, transport and release of proteins
Dna in nucleus codes for protein
Rough endoplasmic reticulum/ribosomes produce protein
Mitochondria produce ATP (Protein synthesis)
Golgi apparatus packages/modifies proteins
Vesicles transport
Exocytosis at the cell membrane
