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How is translation initiated in cell biology?
The small ribosomal subunit binds to the mRNA The tRNA bearing methionine binds to the start codon , The large ribosomal subunit binds to the small one. The start codon signals the start of translation
At the beginning of translation the first tRNA molecule?
At the beginning of translation, the first tRNA molecule, carrying the amino acid methionine, binds to the start codon (AUG) on the mRNA. This tRNA molecule recognizes the start codon through base pairing and initiates the assembly of the ribosome on the mRNA strand.
Which of these is a step in protein synthesis?
Translation, which is the process of synthesizing proteins from mRNA using ribosomes and tRNA, is a step in protein synthesis. During translation, the ribosome reads the codons on the mRNA and binds the appropriate amino acids carried by tRNA molecules to assemble the protein chain.
One binding site on a ribosome holds an mRNA molecule and the other two binding?
sites hold tRNA molecules. The mRNA binding site is where the mRNA molecule binds and is read during translation. The tRNA binding sites are where tRNAs carrying amino acids bind and deliver them to the growing polypeptide chain.
Where is the tRNA located that is attached to the growing protein during translation?
The tRNA that is attached to the growing protein during translation is located at the ribosome.
What is the step of translation in which an mRNA a small ribosomal subunit and the initiator tRNA are aligned together is?
The step of translation in which an mRNA, a small ribosomal subunit, and the initiator tRNA are aligned together is called initiation. This process occurs with the formation of the initiation complex, where the mRNA binds to the small ribosomal subunit and the initiator tRNA carrying methionine binds to the start codon on the mRNA.
Where is the initiator tRNA first attached to the mRNA?
The initiator tRNA is first attached at the start codon (AUG) on the mRNA. The anticodon of the initiator tRNA base pairs with the start codon, signaling the beginning of translation.
Where does initiation of translation occur?
An initiation complex for translation forms by the assembly of the ribosomal subunits and initiator tRNA (met-tRNA) at the start codon on the mRNA.
Which two structures are first to combine in translation?
The small ribosomal subunit and the initiator tRNA molecule are the first two structures to combine in translation. The initiator tRNA molecule carries the amino acid methionine, which is the first amino acid in the polypeptide chain.
Where trna is found?
The tRNA molecules are found mainly in the cytoplasm. When the translation begins, the tRNA moves to the ribosometo supply it with the anticodon and the amino acid.
How is translation initiated in cell biology?
The small ribosomal subunit binds to the mRNA The tRNA bearing methionine binds to the start codon , The large ribosomal subunit binds to the small one. The start codon signals the start of translation
What are the differences between charged tRNA and uncharged tRNA?
Charged tRNA has an amino acid attached to it, ready for protein synthesis, while uncharged tRNA does not have an amino acid attached. Charged tRNA binds to the appropriate codon on the mRNA during translation, while uncharged tRNA cannot participate in translation.
At the beginning of translation the first tRNA molecule?
At the beginning of translation, the first tRNA molecule, carrying the amino acid methionine, binds to the start codon (AUG) on the mRNA. This tRNA molecule recognizes the start codon through base pairing and initiates the assembly of the ribosome on the mRNA strand.
Does transfer RNA perform its function in the nuclear or the cytoplasm explain?
tRNA binds to ribosomes within the cytoplasm where translation and protein synthesis occurs
Which of these is a step in protein synthesis?
Translation, which is the process of synthesizing proteins from mRNA using ribosomes and tRNA, is a step in protein synthesis. During translation, the ribosome reads the codons on the mRNA and binds the appropriate amino acids carried by tRNA molecules to assemble the protein chain.
Does tRNA have anti-codons?
"The mechanism in which a release factor recognizes a stop codon is still unknown." Since anticodons are normally on the complementary tRNA. (The tRNA is what 'reads' the codons on the mRNA and ferries in the corresponding amino acid.) During translation stop codons are recognized by "release factors" that bind to the A-site on the ribosomes during translation.
What would happen if a eukaryotic ribosome had only one tRNA binding site instead of the P and A sites we see in today eukaryotic ribosomes and still needed to execute translation?
If a eukaryotic ribosome had only one tRNA binding site, it would be unable to function in protein synthesis. The P site is where the tRNA carrying the growing polypeptide chain binds, while the A site is where the incoming aminoacyl-tRNA binds. Without these distinct sites, the ribosome would not be able to coordinate the movement of tRNAs during translation.
