B2DE Translation

Where does protein synthesis occur in a eukaryotic cell?

• In the nucleus

• in the plasma membrane

• In the mitochondria

• in the cytosol

Which of the following molecules are directly involved in the process of translation? Select all that apply.

• RNA polymerase

• rRNA
• tRNA
• Aminoacyl tRNA Synthetase
• Double stranded DNA

An organism has a mutation in one of its Aminoacyl tRNA Synthetases causing it to add a Serine to the tRNA matching with CUG instead of the correct amino acid, which is Leucine. What would be the impact on the resulting peptide chains made by this organism?

• All the Leucines in all that individual’s peptide proteins would be replaced with Serine.
• About 1/6th of the leucines would be replaced with Serine in its proteins.
• There would be no change in the protein chain since the codon didn’t change.
• The change in the polypeptide chain would lead to changes in each DNA sequence that has the CUG codon.

Which of the following is responsible for making the peptide bonds between amino acids in a protein?

• tRNA

• small ribosomal subunit

• aminoacyl-tRNA synthases

• large ribosomal subunit

Which of the following is true about the structure of the ribosome?

• The small subunit attaches to the mRNA, the large subunit accepts the tRNAs.
• It is made out of three subunits, the E site, P site, and A site.
• The large subunit of the ribosome attaches to the mRNA transcript first, followed by the small subunit.
• The ribosome is a one piece structure made up entirely of proteins.

Which molecule is responsible for matching a specific amino acid on one of its ends with a specific codon (on an mRNA) using an anticodon on its other end?

• mRNA
• tRNA
• RNA polymerase
• rRNA

Which molecule is responsible for matching the correct amino acid to each tRNA?

• RNA Polymerase

• Aminoacyl-tRNA synthase

• ATP synthase

• The large ribosomal subunit

Which of the following amino acid sequences below would be coded for by the following genetic code? TACGGCTATCAGCCG

• Methionine - Proline - Isoleucine - Valine - Glycine
• Tyrosine - Glycine - Tyrosine - Glutamine - Proline
• Methionine - Proline - Isoleucine - Aspartic Acid - Glycine
• Tyrosine - Proline - Isoleucine - Glutamine - Glycine

Which amino acid matches with the mRNA codon UUC?

• Serine

• Phenylalanine

• Lysine

• Leucine

Which anticodon is found on the tRNA that carries tryptophan?

• UGG
• ACC
• TGG
• AGG