Ribosome Termination by Release Factors

The video tutorial explains the process of protein synthesis, focusing on elongation and termination in ribosomes. It describes how amino acids are polymerized in the ribosome, the role of stop codons, and the function of release factors in terminating translation. The tutorial also covers post-transcriptional modifications in eukaryotes, such as capping, splicing, and polyadenylation, and highlights the concept of co-transcriptional and co-translational protein folding.

What is the role of a release factor during translation termination?

• It binds to the stop codon and initiates ribosome disassembly.

• It transports tRNA to the ribosome.

• It adds amino acids to the growing peptide chain.

• It synthesizes mRNA from DNA.

Which of the following proteins is involved in the hydrolysis of GTP during translation termination?

• EF-Tu

• EFF GTP

• Aminoacyl tRNA

• Peptidyl transferase

What happens to the mRNA after the ribosome disassembles?

• It is immediately degraded.

• It is stored in the nucleus.

• It can be reused for another round of translation.

• It is converted back into DNA.

Which post-transcriptional modification involves the addition of a 5' cap in eukaryotes?

• Splicing

• Polyadenylation

• Methyl guanosine capping

• Phosphorylation

What is the significance of co-transcriptional and co-translational protein folding?

• It allows for the simultaneous synthesis and folding of proteins.

• It prevents mRNA from leaving the nucleus.

• It delays protein synthesis until transcription is complete.

• It ensures that proteins are only synthesized in the nucleus.