Question

practice it!
which of the following statements about translation is true?
select the correct answer(s).
translation takes place at ribosomes.
translation occurs in the nucleus.
trna molecules deliver the correct amino acids to the ribosome.
the start codon, aug, signals the end of translation.
a stop codon signals the ribosome to release the completed polypeptide chain.

Explanation:

• Translation occurs at ribosomes. Ribosomes are the sites where protein synthesis (translation) happens.
• tRNA (transfer RNA) molecules bring the correct amino acids to the ribosome. Each tRNA has an anticodon that pairs with a codon on mRNA and carries the corresponding amino acid.
• A stop codon (e.g., UAA, UAG, UGA) signals the ribosome to release the completed polypeptide chain, ending translation.
• Translation does not occur in the nucleus. Transcription (DNA to RNA) occurs in the nucleus, while translation occurs in the cytoplasm at ribosomes.
• The start codon AUG signals the start of translation (it also codes for methionine), not the end.

Answer:

Translation takes place at ribosomes, tRNA molecules deliver the correct amino acids to the ribosome, A stop codon signals the ribosome to release the completed polypeptide chain.