Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 15, Problem 28CTQ
Explain how single
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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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- Describe the gene and protein defects in phenylketonuria (PKU). How are these defects connected to disease symptoms?arrow_forwardA monomeric protein contains 154 amino acids. How many codons code for these amino acids? How many nucleotides?arrow_forwardDiscuss protein folding and misfolding. Give two consequences (or examples) of protein misfolding and describe the effect of the misfolding.arrow_forward
- Why is it no longer considered necessary to determine theN-terminal amino acid of a protein as a separate step?arrow_forwardDefine mutation. Then describe the three basic types of mutation (substitutions, insertions, and deletions) AND the effects they can each have on the protein(s) for which they code.arrow_forwardDefine the following terms: genetic code, codon, and anticodon. What is the relationship among the bases in DNA, the codons of mRNA, and the anticodons of tRNA?arrow_forward
- Explain why a point mutation does not necessarily change the oriignal amino acid sequence. Explain silent mutations.arrow_forwardA gene contains 141 codons. How many nucleotides are present in the gene’s coding sequence? How many amino acids are expected to be present in the polypeptide encoded by this gene?arrow_forwardSuggest an explanation for the observation that when proteins are chemically modified so that specific side chains have a different chemical nature, these proteins cannot be denatured reversibly.arrow_forward
- Protein kinases (PTKS) are enzymes that regulate the biological activity of proteins by phosphorylation of specific amino acids, inducing a conformational change from an inactive to an active form of the protein. a) True b) Falsearrow_forwarda. Identify the type of mutation shown below. b. How many amino acids are affected? c. What type of impact will this mutation have on the functionality of the protein?arrow_forwardDescribe why this position in your protein is important and outline the effects the mutation will have on the 3D structure and the function of your protein. (up to 50 words) My PDB code: 3GRS Residue point: HIS 467 Mutation: LEU 467arrow_forward
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