Exam (elaborations)
Mbg 2040 Quiz 7 with 100- correct answers 2025
- Course
- Institution
Mbg 2040 Quiz 7 with 100- correct answers 2025
[Show more]
Content preview
Mbg 2040 Quiz 8 with 100%correct answers 2025
The enzymes which catalyzes the addition of an amino acid to the
appropriate tRNA molecule are: - answer Aminoacyl-tRNA synthetases
The 3 base pair sequence found on tRNAS which complement and pair with
the mRNA codon during translation is called the - answer anticodon
The prokaryotic ribosome consists of a 30S subunit and a 50S subunit
which assemble to form the complete 80S ribosome. - answer False
The eukaryotic ribosome consists of a 40S subunit and a 60S subunit
which assemble to form the complete 80S ribosome. - answer True
The Shine-Dalgarno sequence is recognized by which of the following? -
answer The rRNA molecule within the 30S subunit of the prokaryotic
ribosome
elF1, 2 and 3 are all examples of - answer Eukaryotic initiation factors
Put the following steps of translation initiation in prokaryotes in the
correct order: - answer 1. The 30S ribosomal subunit binds the mRNA
molecule at the Shine-Dalgarno sequence with the aid IF-3
2. IF-2/f-Met-tRNAfMET binds the mRNA/30S subunit complex with the
tRNA anticodon aligned with the initiation AUG codon on the mRNA. IF-1
and GTP simultaneously join, forming the 30S initiation complex.
3. IF-3 is released and the 50S subunit joins the initiation complex. GTP is
cleaved and the remaining initiation factors are released.
, 4. The 70S ribosomal is in position on the mRNA with f-Met-tRNAfMET base
paired with the initiation codon and in the P ribosomal site.
Put the following steps of polypeptide chain elongation in the correct
order: - answer 1. The appropriate incoming aminoacyl-tRNA bound with
EF-TU and one molecule of GTP binds the A site of the ribosome, with the
t-RNA anti-codon pairing with the mRNA codon at this site.
2. A peptide bond is formed between the carboxyl end of the growing
polypeptide chain and the amino group of the A site amino acid,
transferring the polypeptide to from the P site tRNA to the A site tRNA.
3. The peptidyl-tRNA moves from the A site to the P site while the
uncharged tRNA in the P site is translocated to the E site as the ribosome
moves 3 nucleotides down the mRNA.
4. This process is repeated until a STOP codon is present in the A site.
While there are many similarities between Prokaryotic and Eukaryotic
ribosome there are some notable differences. Match each statement below
with the appropriate label; Prokaryotes, Eukaryotes or Both. - answer 1.
Prokaryotes- The entire assembled ribosome consists of many ribosomal
proteins and 3 distinct rRNA molecules
2. Eukaryotes- The entire assembled ribosome consists of many ribosomal
proteins and 4 distinct rRNA molecules
3. Both- Two smaller subunits assemble to produce the complete ribosome
Given the following mammalian mRNA sequence what would be the
translated amino acid sequence?
5' cap - GUACCAGUGCCACCAUGGUCACUCCCCAUUAAGCUUUU-3' - answer
NH2-Met-Val-Thr-Pro-His-COOH
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller GUARANTEEDSUCCESS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
62555 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
