Which of the following statements is/are not true for...

Name: Problem 151, Chapter 9: The Pearson Guide to Organic Chemistry for the JEE Advanced
Uploaded: 2021-08-06T15:35:44-08:00
Duration: 1 min 1 s
Channel: Narayan Hari
Description: Which of the following statements is/are not true for protein synthesis (translation)? (a) amino acids are directly recognized by m-RNA. (b) the third base of the codon is less specific. (c) only one codon codes for an amino acid. (d) every t-RNA molecule has more than one amino acid attachment.

Which of the following statements is/are not true for protein synthesis (translation)? (a) amino acids are directly recognized by m-RNA. (b) the third base of the codon is less specific. (c) only one codon codes for an amino acid. (d) every t-RNA molecule has more than one amino acid attachment.

Which of the following statements is/are not true for protein synthesis (translation)?
(a) amino acids are directly recognized by m-RNA.
(b) the third base of the codon is less specific.
(c) only one codon codes for an amino acid.
(d) every t-RNA molecule has more than one amino acid attachment.

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Key Concepts

Translation

Translation is the cellular process in which the genetic code carried by messenger RNA (mRNA) is decoded by ribosomes to synthesize proteins. It involves the reading of codons and the incorporation of corresponding amino acids into a growing polypeptide chain.

Genetic Code

The genetic code is the set of rules by which information encoded within mRNA is translated into proteins. It consists of codons—triplets of nucleotides—that specify particular amino acids. Notably, the code is degenerate, meaning many amino acids are encoded by more than one codon.

tRNA Function and Structure

Transfer RNA (tRNA) molecules are crucial for the translation process because they serve as adaptors that match specific amino acids with corresponding mRNA codons. Each tRNA has a unique anticodon sequence for recognizing a codon and an attachment site for a single specific amino acid, contradicting the notion that a tRNA might carry more than one type of amino acid.

Wobble Hypothesis

The wobble hypothesis explains that the base pairing between the third nucleotide of a codon and the corresponding nucleotide in the tRNA anticodon is less stringent. This reduced specificity allows for a single tRNA to pair with multiple codons, explaining the redundancy in the genetic code.

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