Which Of The Following Best Describes The First Step In The Formation Of The Translation Initiation Complex? (2023)

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What is the first step of translation initiation? ›

Initiation ("beginning"): in this stage, the ribosome gets together with the mRNA and the first tRNA so translation can begin. Elongation ("middle"): in this stage, amino acids are brought to the ribosome by tRNAs and linked together to form a chain.

What are the 3 steps of the initiation of translation? ›

Translation of an mRNA molecule by the ribosome occurs in three stages: initiation, elongation, and termination. During initiation, the small ribosomal subunit binds to the start of the mRNA sequence.

What is the first step during the initiation of translation quizlet? ›

What is the first step during the initiation of translation? -once mRNA is bound to the small subunit, an initiator aminoacetyl tRNA binds to the start codon on the mRNA, then the large subunit binds to the small subunit to complete the initiation complex!

What are the initial stages of translation? ›

There are three major steps to translation: Initiation, Elongation, and Termination. The ribosome is made of two separate subunits: the small subunit and the large subunit. During initiation the small subunit attaches to the 5' end of mRNA. It then moves in the 5' → 3' direction.

What is the first step of translation of DNA? ›

In the first step, the information in DNA is transferred to a messenger RNA (mRNA) molecule by way of a process called transcription.

What is the correct order of the steps of translation? ›

Stages of translation:
  1. Initiation: To begin translation, the ribosome on the mRNA must be assembled in the correct direction and the start codon must be found.
  2. Elongation: Elongation is when the polypeptide chain gets longer.
  3. Termination: Termination is the final step in the translation process.

What are the first three events of translation? ›

Translation of an mRNA molecule occurs in three stages: initiation, elongation, and termination.

What are the 3 stages of transcription? ›

Transcription takes place in three steps: initiation, elongation, and termination.

What happens in step 1 of translation? ›

(1) Translation begins when a ribosome (gray) docks on a start codon (red) of an mRNA molecule in the cytoplasm. (2) Next, tRNA molecules attached to amino acids (spheres) dock at the corresponding triplet codon sequence on the mRNA molecule.

What happens at the beginning of translation? ›

Getting started: Initiation

In initiation, the ribosome assembles around the mRNA to be read and the first tRNA (carrying the amino acid methionine, which matches the start codon, AUG). This setup, called the initiation complex, is needed in order for translation to get started.

What is the first initiation factor for translation? ›

Bacterial translation initiation is a multistep process, which requires initiation factor 1 (IF1), IF2 and IF3. In the first phase of initiation, IF1, IF2 (a GTP-binding protein), IF3, mRNA and the initiator fMet-tRNAfMet bind to the 30S ribosomal subunit, forming the 30S initiation complex (30S IC).

What is the formation of initiation complex? ›

The initiation phase of translation begins with the formation of a 30S initiation complex (30SIC) in which the start codon of the mRNA translation initiation region (TIR) is decoded by the CAU anticodon of the initiator fMet-tRNA in the P-site of the small (30S) ribosomal subunit.

What is the process of translation? ›

Translation is the process that takes the information passed from DNA as messenger RNA and turns it into a series of amino acids bound together with peptide bonds.

What is the process of initiation? ›

Initiation is the beginning of transcription. It occurs when the enzyme RNA polymerase binds to a region of a gene called the promoter.

What is the first step of the translation phase quizlet? ›

During the initiation stage, a complex is formed between an mRNA molecule, the first tRNA, and the ribosomal subunits.


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