tRNA Processing 1

The video tutorial explains the processing of ribosomal RNA and transfer RNA, highlighting the modifications and cleavages involved. Ribosomal RNA is processed in the nucleolus, requiring base modifications and methylation, but no splicing. Transfer RNA processing is more complex, involving splicing, base modifications, and unusual base pairings. The tutorial details the transformation of uridine, adenosine, and guanosine into modified bases and describes the structural changes in tRNA, including the formation of the anticodon loop and the addition of the CCA sequence, essential for amino acid attachment.

What is the primary modification required for ribosomal RNA (rRNA) processing?

• Methylation

• Base clipping

• Splicing

• Polyadenylation

Which process is considered the most complex in tRNA processing?

• Capping

• Splicing

• Base modification

• Polyadenylation

What is a 'funny base' in the context of tRNA processing?

• A modified nitrogenous base

• A base that is removed during processing

• A base that pairs with itself

• A base that is not found in DNA

Which enzyme is responsible for adding the CCA sequence to tRNA?

• RNA polymerase

• T RNA nucleotidyl transferase

• Endonuclease

• Exonuclease

What unusual base pairing is observed in tRNA?

• G-C

• A-U

• A-G

• C-T

What is the role of the anticodon loop in tRNA?

• It binds to the ribosome

• It removes unnecessary sequences

• It facilitates mRNA and tRNA interactions

• It adds amino acids to the tRNA

Which part of the tRNA is crucial for amino acid attachment?

• 5' cap

• Leader sequence

• Anticodon loop

• 3' OH of adenosine