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The translation process involves the fol...

The translation process involves the following steps:
(I) Binding of ribosome and mRNA at the start codon (AUG).
(II) Recognition of start codon (AUG) by initiator tRNA.
(III) Amino acids are activated in the presence of ATP
(IV) Amino acids bind with the enzyme aminoacyl tRNA synthetase
Choose the correct sequence:

A

(I), (II), (IV), (III)

B

(III), (IV), (II), (I)

C

(I), (II), (III), (IV)

D

(III), (II), (I), (IV)

Text Solution

AI Generated Solution

The correct Answer is:
To determine the correct sequence of steps involved in the translation process, we need to analyze the provided steps carefully. The translation process is a crucial part of protein synthesis and involves several key steps. Here’s a breakdown of the steps mentioned in the question: 1. **Binding of ribosome and mRNA at the start codon (AUG)**: This is the first step where the ribosome assembles around the mRNA at the start codon, which is AUG. This step is essential for initiating translation. 2. **Recognition of start codon (AUG) by initiator tRNA**: After the ribosome has bound to the mRNA, the initiator tRNA, which carries the amino acid methionine (corresponding to the AUG codon), recognizes and binds to the start codon. 3. **Amino acids are activated in the presence of ATP**: Before the amino acids can be added to the growing polypeptide chain, they must be activated. This activation process requires ATP and prepares the amino acids for incorporation into the protein. 4. **Amino acids bind with the enzyme aminoacyl tRNA synthetase**: This step involves the binding of the activated amino acids to their corresponding tRNA molecules by the enzyme aminoacyl tRNA synthetase. This enzyme facilitates the attachment of the correct amino acid to the appropriate tRNA. Now, let's arrange these steps in the correct order based on the translation process: **Correct Sequence**: 1. (III) Amino acids are activated in the presence of ATP. 2. (IV) Amino acids bind with the enzyme aminoacyl tRNA synthetase. 3. (I) Binding of ribosome and mRNA at the start codon (AUG). 4. (II) Recognition of start codon (AUG) by initiator tRNA. Thus, the correct sequence of steps in the translation process is: **III → IV → I → II**.
To determine the correct sequence of steps involved in the translation process, we need to analyze the provided steps carefully. The translation process is a crucial part of protein synthesis and involves several key steps. Here’s a breakdown of the steps mentioned in the question: 1. **Binding of ribosome and mRNA at the start codon (AUG)**: This is the first step where the ribosome assembles around the mRNA at the start codon, which is AUG. This step is essential for initiating translation. 2. **Recognition of start codon (AUG) by initiator tRNA**: After the ribosome has bound to the mRNA, the initiator tRNA, which carries the amino acid methionine (corresponding to the AUG codon), recognizes and binds to the start codon. 3. **Amino acids are activated in the presence of ATP**: Before the amino acids can be added to the growing polypeptide chain, they must be activated. This activation process requires ATP and prepares the amino acids for incorporation into the protein. ...
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