Translation Process Quiz

What is the role of the initiator tRNA during translation?

• It binds to the stop codon.

• It carries the release factor.

• It binds to the start codon (AUG).

• It dissociates the ribosome from mRNA.

Where does the ribosome move after the tRNA in the P site transfers its amino acid?

• To the A site

• To the E site

• To the start codon

• To the release factor

What happens when a release factor binds during translation?

• The ribosome starts translation.

• The ribosome and polypeptide chain dissociate from the mRNA.

• The tRNA transfers an amino acid.

• The ribosome moves to the A site.

What is the direction of movement for the ribosome along the mRNA during translation?

• 3' → 5'

• 5' → 3'

• Random

• Circular

What is the function of the small ribosomal subunit during translation?

• It binds to the release factor.

• It binds to mRNA and moves along it.

• It dissociates the polypeptide chain.

• It transfers amino acids.

What are proteins comprised of?

• Lipids

• Amino acids

• Carbohydrates

• Nucleic acids

How many different amino acids are there?

• 10

• 15

• 20

• 25

What type of bond forms the primary structure of proteins?

• Hydrogen bond

• Ionic bond

• Covalent bond

• Peptide bond

Which structure level involves the folding of a polypeptide into a complex 3D shape?

• Primary structure

• Secondary structure

• Tertiary structure

• Quaternary structure

What is the quaternary structure of a protein?

• Sequence of amino acids

• Folding into α-helix or β-sheet

• Overall 3D shape

• Interaction of multiple polypeptides