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What controls the bonding of specific amino acids to their correct tRNAs in a cell?
A group of enzymes called aminoacyl-tRNA synthetases control the specific bonding of amino acids to their correct tRNAs in a cell. Each amino acid has its own corresponding aminoacyl-tRNA synthetase that attaches it to the appropriate tRNA molecule based on recognition of specific sequences. This process ensures that the correct amino acid is incorporated into a growing polypeptide chain during protein synthesis.
What regions of a ribosome holds the growing polypeptide?
The P site and the A site of the ribosome hold the growing polypeptide chain during translation. The P site is where the tRNA carrying the growing polypeptide is located, and the A site is where the new tRNA carrying the next amino acid in the sequence enters.
In what order does a tRNA move through the binding sites on a ribosome?
A tRNA moves through the ribosome binding sites in the following order: A (aminoacyl) site, P (peptidyl) site, and finally E (exit) site. This movement occurs during the process of translation where the tRNA delivers amino acids to the growing polypeptide chain.
Is tRNA involved in transcription?
tRNA is not directly involved in transcription. tRNA is responsible for transferring amino acids to the ribosome during translation, where it helps in the assembly of the polypeptide chain based on the mRNA sequence. Transcription is the process of synthesizing mRNA from DNA.
What is the RNA molecule that transfers amino acids to the growing end of a polypeptide chain during translation?
The RNA molecule responsible for transferring amino acids to the growing end of a polypeptide chain during translation is called transfer RNA (tRNA). Each tRNA molecule carries a specific amino acid and has an anticodon region that base pairs with the corresponding codon on the mRNA.
Tools help a cell translate an mRNA message into a polypeptide?
Ribosomes and tRNA molecules help a cell translate an mRNA message into a polypeptide.
What are the two bonding sites of tRNA on the ribosomes?
The tRNA binds to the ribosome at two sites: the A site (aminoacyl site) for incoming aminoacyl-tRNA bearing the next amino acid in the growing polypeptide chain, and the P site (peptidyl site) where the tRNA carrying the growing polypeptide chain is located.
How are tRNA polypeptide and anticodon related?
tRNA is a type of RNA molecule that carries amino acids to the ribosome during protein synthesis. The tRNA has an anticodon sequence that is complementary to the mRNA codon, allowing it to base pair with the mRNA and ensure the correct amino acid is added to the growing polypeptide chain.
What controls the bonding of specific amino acids to their correct tRNAs in a cell?
A group of enzymes called aminoacyl-tRNA synthetases control the specific bonding of amino acids to their correct tRNAs in a cell. Each amino acid has its own corresponding aminoacyl-tRNA synthetase that attaches it to the appropriate tRNA molecule based on recognition of specific sequences. This process ensures that the correct amino acid is incorporated into a growing polypeptide chain during protein synthesis.
What regions of a ribosome holds the growing polypeptide?
The P site and the A site of the ribosome hold the growing polypeptide chain during translation. The P site is where the tRNA carrying the growing polypeptide is located, and the A site is where the new tRNA carrying the next amino acid in the sequence enters.
What terms is least closely related to the terms intron tRNA polypeptide and anticodon?
intron
What does tRNAs do?
tRNA delivers the amino acids to the ribosomes for incorporation into [nacent polypeptide] protein chains.
What carries amino acids to ribosomes where amino acids are linked to polypeptide?
Transfer RNA (tRNA) molecules carry amino acids to ribosomes where they are linked to the growing polypeptide chain during protein synthesis. Each tRNA molecule carries a specific amino acid and has an anticodon sequence that base pairs with the codon on the mRNA.
What is the location on ribosome in which the tRNA leaves?
The tRNA leaves the ribosome from the E (exit) site. This is the final step in the translation process, where the tRNA is released from the ribosome after transferring its amino acid to the growing polypeptide chain.
What contains information to produce a single polypeptide?
Messenger RNA (mRNA) contains the information needed to produce a single polypeptide during translation. The sequence of nucleotides in the mRNA molecule is translated by ribosomes to determine the order of amino acids in the polypeptide chain. This process occurs in the cytoplasm of the cell.
Which site on the ribosome does the new tRNA bring an amino acid to?
The new tRNA brings an amino acid to the A site on the ribosome. This is where the transfer of the growing polypeptide chain from the tRNA in the P site to the newly arriving amino acid on the tRNA in the A site occurs.
What terms is least closely related to the others intron tRNA polypeptide and anticodon?
Polypeptide is least closely related to the others. An intron is a noncoding sequence within a gene, tRNA is a type of RNA molecule involved in protein synthesis, and anticodon is a sequence of three nucleotides in tRNA that corresponds to a specific amino acid during translation. Polypeptide, on the other hand, refers to a chain of amino acids that forms a protein through peptide bonds.
