Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 15, Problem 14RQ
What processing step enhances the stability of pre-tRNAs and pre-rRNAs?
- methylation
nucleotide modification- cleavage
- splicing
Expert Solution & Answer
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Check out a sample textbook solutionStudents have asked these similar questions
Explain why mature mRNA transcripts is a different size that pre-mRNA transcripts. Be sure to include the name of the protein-ribonucleotide complex that’s involved.
Match the term to its best definition.
molecule with high-energy bond that carries
amino acid to translation site
part of a gene that gets translated into a protein
primary transcript in eukaryotes that needs to be
processed
single stranded nucleic acid that helps both in
transcription and in splicing
nucleic acid that makes up 50% of each ribosome
sequence of DNA upstream from the gene that
binds RNA polymerase before transcription
post processing molecule that carries instructions
for making a protein from the nucleus to a
ribosome in the cytoplasm
part of a gene that gets spliced out during pre
mRNA processing
Transcription
Translation stop site
start site
Intron 1
Promoter
Exon 1
Exon 2 Intron 2
Exon 3
| Transcription
stop site
What kind of mutation would you introduce to render the gene above such that it is expressed with a
normal functioning protein, but less protein produced overall compared to the non-mutated gene?
Explain in 1-2 sentences, including where the mutation would be located.
Chapter 15 Solutions
Biology 2e
Ch. 15 - Figure 15.11 A scientist splices a eukaryotic...Ch. 15 - Figure 15.13 Errors in splicing are implicated in...Ch. 15 - Figure 15.16 Many antibiotics inhibit bacterial...Ch. 15 - The AUC and AUA codons in mRNA both specify...Ch. 15 - How many nucleotides are in 12 mRNA codons? 12 24...Ch. 15 - Which event contradicts the central dogma of...Ch. 15 - Which subunit of the E. coli polymerase confers...Ch. 15 - The -10 and -35 regions of prokaryotic promoters...Ch. 15 - Three different bacteria species have the...Ch. 15 - Which feature of promoters can be found in both...
Ch. 15 - What transcripts will be most affected by low...Ch. 15 - How do enhancers and promoters differ? Enhancers...Ch. 15 - Which pre-mRNA processing step is important for...Ch. 15 - What processing step enhances the stability of...Ch. 15 - A scientist identifies a pre-mRNA with the...Ch. 15 - The RNA components of ribosomes are synthesized in...Ch. 15 - In any given species, there are at least how many...Ch. 15 - A scientist introduces a mutation that makes the...Ch. 15 - Imagine if there were 200 commonly occurring amino...Ch. 15 - Discuss how degeneracy of the genetic code makes...Ch. 15 - A scientist sequencing itiRNA identifies the...Ch. 15 - If mRNA is complementary to the DNA template...Ch. 15 - In your own words, describe the difference between...Ch. 15 - A fragment of bacterial DNA reads: 3’...Ch. 15 - A scientist observes that a cell has an RNA...Ch. 15 - Chronic lymphocytic leukemia patients often harbor...Ch. 15 - Transcribe and translate the following DNA...Ch. 15 - Explain how single nucleotide changes can have...Ch. 15 - A normal mRNA that reads 5’ -...
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- Transcription of a typical gene encoding a polypeptide in eukaryotes involves all of the following EXCEPT: transcription of DNA corresponding to both introns and exons. transcription of the DNA corresponding to the gene of the polypeptide which may include UTRS (c) RNA synthesis by RNA polymerase II. the splicing together of a number of exons in the DNA prior to transcription.arrow_forwardWhat is meant by the term chromatin remodeling? Describe the importance of this process to transcription.arrow_forwardThe code for a fully functional protein is actually coming from an mRNA transcript that has undergone post-transcriptional processing which is essentially way too different from the original code in the DNA template. Given: GUC-CAC-UUA-ACC-CCU-GAG-GAG-AAA-UCG-GCC (Protein with known amino acid sequence) Requirement: Original DNA code. Itemize the steps you would take to get to know the original DNA code of the protein in focus.arrow_forward
- point: Gene expression and gene regulation - Google Chrome 1/mod/quiz/attempt.php?attempt=D1168284&cmid=3372885 5. uc The following segment of DNA codes a protein. The uppercase letters represent exons, the lowercase letters red introns. Draw the pre-mRNA, the mature mRNA and translate the codons using the genetic code to form th protein. Identify the 5'UTR and 3'UTR. out of 5'-AGGAAATGAAATGCCAgaattgccggatgacGGTCAGCaatcgaGCACATTTGTGATTTACCGT-3" g question A B. 三 X2 =三三 囲 Y pre-MRNA:| I囲2 Larrow_forwardWhich one of the following options is NOT a step in RNA processing? Addition of the 5’ G cap Addition of the 3’ poly A tail Splicing to remove exons and connect the retained introns Splicing to remove introns and connect the retained exonsarrow_forwardWhat is Histone Modification?arrow_forward
- INSTRUCTION: = IF BOTH STATEMENT ARE TRUE = IF FIRST STATEMENT IS TRUE WHILE SECOND STATEMENT IS FALSE = IF FIRST STATEMENT IS FALSE WHILE SECOND STATEMENT IS TRUE = IF BOTH STATEMENTS ARE FALSE STAMENT 1: RNA splicing is the step in post transcriptional processing where intervening sequences are removed STAMENT 2: 5’ to 3’ direction is the direction of growth of the peptide chain ANSWER: STAMENT 1: The enzyme that joins the gaps in newly synthesized DNA is called DNA polymerase STAMENT 2: The name of the compound formed when cytosine is bonded to ribose is cytidine ANSWER: STAMENT 1: Codon is a term that refers to the 3-nucleotide code for amino acids in mRNA STAMENT 2: Transition is a kind of mutation where a purine changes to another purine ANSWER:arrow_forwardWhat is the purpose of histone tail modification?arrow_forwardWhat is a difference between prokaryotic and eukaryotic gene expression? Please explain. Also, discuss briefly the significance in splicing, why this is done and how this leads into variety of different polypeptides.arrow_forward
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