MA7
Which of the following structures is needed for the translation initiation complex to form in eukaryotes?
5' cap
Accuracy in translation of mRNA into the primary structure of a polypeptide depends on specificity in the ________.
Accuracy in the translation of mRNA into the primary structure of a protein depends on specificity in the bonding of the anticodon to the codon. and attachment of amino acids to tRNAs.
What is the function of the release factor during translation in eukaryotes?
It binds to the stop codon in the A site in place of a tRNA.
Which of the following statements best describes the significance of the TATA box in the promoters of eukaryotes?
It is the recognition site for the binding of a specific transcription factor.
Which of the following best describes the redundancy in the genetic code?
More than one codon can specify the addition of the same amino acid.
Which of the following statements best describes the termination of transcription in prokaryotes?
RNA polymerase transcribes through the terminator sequence, causing the polymerase to separate from the DNA and release the transcript.
Which of the following best explains the observation that in bacteria, there are 61 mRNA codons that specify an amino acid, but only 45 tRNAs?
The rules for base pairing between the third base of a codon and tRNA are flexible.
Which of the following molecular structures contains codons?
mRNA
Which of the following molecules directly participates in the process of translation?
mRNA, which is transported from the nucleus into the cytoplasm (ribosomes) to be read. - tRNA, this is a type of RNA present in the ribosomes whose function is to read the codons of the mRNA and carry corresponding amino acids to the peptide chain. - rRNA, is another type of RNA that makes up the ribosomes and functions in the synthesis of proteins from the amino acids.
In eukaryotes which of the following is the first step in translation?
the small subunit of the ribosome recognizes and attaches near the 5' cap of mRNA