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 11RQ
What transcripts will be most affected by low levels of a-amanitin?
- 18S and 28S rRNAs
- pre-m RNAs
- 5S rRNAs and tRNAs
- other small nuclear RNAs
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What transcripts will be most affected by low levels of α- amanitin? a. 18S and 28S rRNAs b. pre-mRNAs c. 5S rRNAs and tRNAs d. other small nuclear RNAs
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The RNA complement of a protein coding gene is what?
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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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- Eukaryotic mRNA: usessnRNPs to cut out introns and seal together translatableexons. uses a spliceosome mechanism made of DNA to recognizeconsensus sequences to cut and splice. has a guanine cap on its 39 end and a poly(A) tail on its 59 end. is composed of adenine, thymine, guanine, and cytosine. codes the guanine cap and poly(A) tail from the DNAtemplate.arrow_forwardThe promoter and terminator regions of genes are important in: a. coding for amino acids b. gene regulation c. structural support for the gene d. intron removal e. anticodon recognitionarrow_forwardThe following segment of DNA codes for a protein. The uppercase letters represent exons. The lowercase letters represent introns. The lower strand is the template strand. Draw the primary transcript and the mRNA resulting from this DNA.arrow_forward
- Which of the following is/are typically removed from pre-mRNA during nuclear processing in eukaryotes? (a) upstream leader sequences (b) poly-A tail (c) introns (d) exons (e) all the precedingarrow_forwardPortions of eukaryotic mRNA sequence that are removed during RNA processing are . a. exons b. caps c. poly-A tails d. intronsarrow_forwardGiven the following mRNA, write the double-stranded DNA segment that served as the template. Indicate both the 5 and the 3 ends of both DNA strands. Also write out the tRNA anticodons and the amino acid sequence of the protein encoded by the mRNA message. DNA: mRNA: 5-CCGCAUGUUCAGUGGGCGUAAACACUGA-3 protein: tRNA:arrow_forward
- In bacteria, several genes can be transcribed together into a single mRNA, which is referred to as _____________________. polycistronic mRNA long non-coding RNA polygenetic RNA multi-sense mRNA macro RNAarrow_forwardwhich of the following is mismatched a- small RNA catalyic with or without proteins b- rRNA 80% of cellular RNA c- mRNA stable RNA carrying the coded information from DNA d- tRNA carry amino acids during protein synthesisarrow_forwardIn bacteria, several genes can be transcribed together into a single mRNA, which is referred to as _____________________. long non-coding RNA macro RNA polygenetic RNA multi-sense mRNA polycistronic mRNA Submitarrow_forward
- Eukaryotic messenger RNA molecules have _______________ at their 5' ends. Question 5 options: m7 G caps poly(A) tails hairpin structures SSBs snRNPsarrow_forwardThe following double stranded segment of DNA is part of a protein coding gene. The segments in uppercase letters (ACTG) represent the exons. The segments in lowercase letters (acgt) represent introns. The lower strand is the template strand that is used by the RNA polymerase to make an RNA transcript. Draw or write-out a) the sequence of the primary transcript and b) the mature mRNA resulting from this stretch of DNA.arrow_forwardDescribe the process of transcription. Your answer should be at least a full paragraph (3-7 sentences) and include RNA processing (hint there are 3 ways in which mature mRNA is different from primary or Pre-mRNA). Correct vocabulary should be used.arrow_forward
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