Key Areas 1.3 - Translation Process

Question 1

What is the Difference between Start and Stop Codons?

Answer 1

mRNA Codons AUG codes for the Amino Acids and acts as the Start Codon

mRNA Codons UGA, UAG and UAA do not code for Amino Acids and act as Stop Codons

Question 2

How does Start and Stop Codons relate to Translation?

Answer 2

Translation begins at a Start Codon and ends at a Stop Codon

Question 3

What is the first stage in Translation?

Answer 3

Mature mRNA binds to the Ribosome

Question 4

What is the second stage in Translation?

Answer 4

Each tRNA anticodon binds to a complementary mRNA Codon, thus lining up the Amino Acid (being carried by tRNA) in a specific order.

Question 5

What is the third/fourth (Last Stages) in Translation?

Answer 5

Peptide Bonds form between the amino acids to form a growing Polypeptide Chain.

Each tRNA then leaves the Ribosome as the Polypeptide is formed.