Question

9. Consider the processes in Figure 2 and Figure 1 below. Arrange the letters in the appropriate order. | B C Smart Bology IF-1 IF-2 D IF-3 000 oo TRNA Figure 2 Figure BOLEH Introduction of Molecular Biology University of Toronto SSLE

Answer 1

1. The first figure order of events are as follows:

D-F-C-A-E-B

The ribosomal unit is the D and the IF1 and IF3 bind with this unit which initiates the translation. Then the IF2 combines with the complex which gets the mRNA and the tRNA along with it and slowly the IF1, IF2 &IF3 are removed once the tRNA is in position on the ribosomal unit.

2. In the second figure, the sequence is:

D-A-B-C.

First the initiation tRNA and the second codon comes and occupies the P and A site respectively. Then a peptide bond formation occurs between these two amino acids which is A. Followed by the translocation of the two tRNA into the subsequent P and E site and the binding of the next tRNA.

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