Molecular Bio 2 UCF Exam Questions And
Answers
PTC(Peptidyl transferase center) is formed by about -
correct answer ✅20 nucleotides of the 23s rRNAs
OTC resideus orient both -
correct answer ✅tRNAs in proximity for the peptidyl transferase
reaction to occur.
Does PTC residues have role in chemical/structure? -
correct answer ✅NO
WHAT GROUP OF tRNA in ____ site is critical for activity of
concerted proton trasnfer? -
correct answer ✅P site, 2'OH
A2451 -
correct answer ✅essenttial in PTC in 23s rRNA, but not fully
understood
3' acceptor region of tRNAs contact -
correct answer ✅rRNA of the 50s subunit
, Molecular Bio 2 UCF Exam Questions And
Answers
Anticodon loops of tRNAs are near -
correct answer ✅30s subunit rRNA
Kink btwn what two site codons prevent incoming ___site tRNA
from accessing codons at pSITE? -
correct answer ✅A and P site codon
Ribosome has how many channels -
correct answer ✅2 channels
1) entry
2)exit
entry channel -
correct answer ✅wide, allows unpaired mRNA thru, 2 narrow for
RNA with secondary structure.
Ensures that codons in mRNA will be exposed and available for
pairing with the anticodon loops of tRNAS.
Exit channel -
correct answer ✅allows nascent polypeptide emerge. Some
secondary alpha helice can form inside channel but B sheet cant.
Answers
PTC(Peptidyl transferase center) is formed by about -
correct answer ✅20 nucleotides of the 23s rRNAs
OTC resideus orient both -
correct answer ✅tRNAs in proximity for the peptidyl transferase
reaction to occur.
Does PTC residues have role in chemical/structure? -
correct answer ✅NO
WHAT GROUP OF tRNA in ____ site is critical for activity of
concerted proton trasnfer? -
correct answer ✅P site, 2'OH
A2451 -
correct answer ✅essenttial in PTC in 23s rRNA, but not fully
understood
3' acceptor region of tRNAs contact -
correct answer ✅rRNA of the 50s subunit
, Molecular Bio 2 UCF Exam Questions And
Answers
Anticodon loops of tRNAs are near -
correct answer ✅30s subunit rRNA
Kink btwn what two site codons prevent incoming ___site tRNA
from accessing codons at pSITE? -
correct answer ✅A and P site codon
Ribosome has how many channels -
correct answer ✅2 channels
1) entry
2)exit
entry channel -
correct answer ✅wide, allows unpaired mRNA thru, 2 narrow for
RNA with secondary structure.
Ensures that codons in mRNA will be exposed and available for
pairing with the anticodon loops of tRNAS.
Exit channel -
correct answer ✅allows nascent polypeptide emerge. Some
secondary alpha helice can form inside channel but B sheet cant.
