Question

Какова роль т-РНК в синтезе булка?а) служит матрицей для синтеза булкаб) переносит информацию о первичной структуре белкав) хранит информацию о первичной структуре белкаг) переносит аминокислоты к рибосом

Answer 1

Переносит аминокислоты к рыбосомам

Answer 2

Role of tRNA in Protein Synthesis

tRNA (transfer RNA) plays a crucial role in protein synthesis, specifically in the process of translation. During translation, the genetic information stored in mRNA (messenger RNA) is used to synthesize proteins. tRNA acts as an adapter molecule that helps in the accurate translation of the genetic code into a specific sequence of amino acids, which are the building blocks of proteins.

tRNA as a Template for Protein Synthesis

One of the roles of tRNA in protein synthesis is to serve as a template or a "molecular adaptor" for the synthesis of proteins. Each tRNA molecule carries a specific amino acid and has an anticodon sequence that is complementary to a specific codon on the mRNA. The codons on the mRNA correspond to specific amino acids, and the tRNA molecules bring the correct amino acids to the ribosome during translation.

When the ribosome encounters a codon on the mRNA, the complementary anticodon on the tRNA binds to it, ensuring that the correct amino acid is added to the growing polypeptide chain. This process continues until the entire mRNA sequence is translated and a complete protein is synthesized.

tRNA as a Carrier of Information

Another important role of tRNA is to carry information about the primary structure of proteins. The primary structure of a protein refers to the specific sequence of amino acids that make up the protein. Each tRNA molecule is associated with a specific amino acid, and the sequence of nucleotides in the tRNA molecule is unique to that particular tRNA-amino acid pair.

By carrying specific amino acids and having unique nucleotide sequences, tRNA molecules store and transfer information about the primary structure of proteins. This information is crucial for the accurate synthesis of proteins during translation.

tRNA and Amino Acid Transfer to the Ribosome

In addition to serving as a template and carrying information, tRNA also plays a direct role in transferring amino acids to the ribosome during protein synthesis. Each tRNA molecule has a binding site for a specific amino acid, and it carries that amino acid to the ribosome.

Once the tRNA molecule binds to the ribosome, the amino acid it carries is transferred to the growing polypeptide chain. This process is repeated for each codon on the mRNA, ensuring that the correct amino acids are added in the correct order to form the protein.

In summary, tRNA plays multiple roles in protein synthesis. It serves as a template for protein synthesis, carries information about the primary structure of proteins, and transfers amino acids to the ribosome for the accurate synthesis of proteins.

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