BIO 1404 Test 5 (CH. 15,16, and 21) Questions and Answers
9 views 0 purchase
Course
BIO 1404 5
Institution
BIO 1404 5
BIO 1404 Test 5 (CH. 15,16, and 21)
The AUC and AUA codons in mRNA both specify isoleucine. What feature of the genetic code explains this? - Answer-degeneracy
How many nucleotides are in 12 mRNA codons? - Answer-36
Which event contradicts the central dogma of molecular biology? - Answer-S...
BIO 1404 Test 5 (CH. 15,16, and 21)
The AUC and AUA codons in mRNA both specify isoleucine. What feature of the
genetic code explains this? - Answer-degeneracy
How many nucleotides are in 12 mRNA codons? - Answer-36
Which event contradicts the central dogma of molecular biology? - Answer-Scientists
use reverse transcriptase enzymes to make DNA from RNA.
Which subunit of the E. coli polymerase confers specificity to transcription? -
Answer-σ
The -10 and -35 regions of prokaryotic promoters are called consensus sequences
because ________. - Answer-they are similar in all bacterial species
Which feature of promoters can be found in both prokaryotes and eukaryotes? -
Answer-TATA box
What transcripts will be most affected by low levels of α-amanitin? - Answer-pre-
mRNAs
How do enhancers and promoters differ? - Answer-Enhancers increase the
efficiency of gene expression, but are not essential for transcription. Promoter
recognition is essential to transcription initiation.
Which pre-mRNA processing step is important for initiating translation? - Answer-7-
methylguanosine cap
What processing step enhances the stability of pre-tRNAs and pre-rRNAs? -
Answer-methylation
The RNA components of ribosomes are synthesized in the ________. - Answer-
nucleolus
In any given species, there are at least how many types of aminoacyl tRNA
synthetases? - Answer-20
A scientist introduces a mutation that makes the 60S ribosomal subunit
nonfunctional in a human cell line. What would be the predicted effect on translation?
- Answer-Translation stalls after the initiation AUG codon is identified.
Control of gene expression in eukaryotic cells occurs at which level(s)? - Answer-
epigenetic, transcriptional, post-transcriptional, translational, and post-translational
levels
Post-translational control refers to: - Answer-regulation of gene expression after
translation
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 Freshy. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
