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Multiple Choice
Which of the following correctly lists the main steps of translation in the proper order?
A
Initiation, Termination, Elongation
B
Initiation, Elongation, Termination
C
Elongation, Initiation, Termination
D
Termination, Initiation, Elongation
Verified step by step guidance
1
Understand the process of translation, which is the synthesis of proteins from mRNA in the ribosome. Translation involves three main stages: initiation, elongation, and termination.
Step 1: Initiation - During this stage, the ribosome assembles around the start codon of the mRNA. The start codon (AUG) signals the beginning of translation, and the first tRNA carrying methionine binds to the ribosome.
Step 2: Elongation - In this stage, amino acids are added one by one to the growing polypeptide chain. The ribosome moves along the mRNA, and tRNAs bring the appropriate amino acids based on the codons in the mRNA sequence.
Step 3: Termination - Translation ends when the ribosome encounters a stop codon (UAA, UAG, or UGA) on the mRNA. Release factors bind to the ribosome, causing the polypeptide chain to be released and the ribosome to disassemble.
Review the options provided in the problem and identify the sequence that matches the correct order of translation steps: Initiation, Elongation, Termination.