Question

Which of the following events occur during eukaryotic translation initiation?

1) Binding of the small ribosomal subunit to the mRNA
2) Recognition of the start codon by the initiator tRNA
3) Assembly of the large ribosomal subunit
4) Formation of the initiation complex
5) All of the above

Answer 1

During eukaryotic translation initiation, events such as the binding of the small ribosomal subunit to the mRNA, recognition of the start codon by the initiator tRNA, assembly of the large ribosomal subunit, and formation of the initiation complex occur.

Step-by-step explanation:

The events that occur during eukaryotic translation initiation include:

1. Binding of the small ribosomal subunit to the mRNA: The small ribosomal subunit binds to the mRNA template.
2. Recognition of the start codon by the initiator tRNA: The initiator tRNA recognizes the start codon on the mRNA.
3. Assembly of the large ribosomal subunit: The large ribosomal subunit binds to the initiation complex.
4. Formation of the initiation complex: Initiation factors and the initiator tRNA form the initiation complex on the start codon.

Therefore, the correct answer is 4) Formation of the initiation complex.