Protein Synthesis

Question 1

Functions of:
Ribosomal RNA (rRNA)

Transfer RNA (tRNA)

Messenger RNA (mRNA)

Answer 1

• Ribosomal structure
• Brings amino acid to ribosome
• Codes for protein

Question 2

Steps in protein synthesis:
During transcription?
After transcription?
UTR?

Answer 2

• 5’ ends capped with 7-methylguanylate
• Polyadenylation at 3’ end. RNA splicing then occurs to remove introns: mature mRNA strand
• Untranslated region

Question 3

tRNA:
Structure?
How AA binds to it?

Answer 3

• D and T loops with an Anticodon

- AA binds using ATP

Question 4

Translation?

Answer 4

• mRNA READ FROM 5’ TO 3’
• tRNA binds to A site, and AA binds to adjacent one
• mRNA now in P site, before moving to E site

Question 5

What happens after synthesis?

Answer 5

• Signal sequences label them to go to a specific location