Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Chapter 12, Problem 31RE
REFLECT AND APPLY E. coli has two tRNAs for methionine. What is the basis for the distinction between the two?
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Chapter 12 Solutions
Biochemistry
Ch. 12 - RECALL Prepare a flow chart showing the stages of...Ch. 12 - Prob. 2RECh. 12 - RECALL Define degenerate code.Ch. 12 - RECALL How can the binding assay technique be used...Ch. 12 - RECALL Which nucleotides break the rules of...Ch. 12 - Prob. 6RECh. 12 - Prob. 7RECh. 12 - REFLECT AND APPLY It is possible for the codons...Ch. 12 - Prob. 9RECh. 12 - Prob. 10RE
Ch. 12 - REFLECT AND APPLY How would protein synthesis be...Ch. 12 - REFLECT AND APPLY Comment on the evolutionary...Ch. 12 - Prob. 13RECh. 12 - Prob. 14RECh. 12 - RECALL What is the role of ATP in amino acid...Ch. 12 - Prob. 16RECh. 12 - Prob. 17RECh. 12 - Prob. 18RECh. 12 - REFLECT AND APPLY A friend tells you that she is...Ch. 12 - Prob. 20RECh. 12 - REFLECT AND APPLY Is amino acid activation...Ch. 12 - Prob. 22RECh. 12 - Prob. 23RECh. 12 - Prob. 24RECh. 12 - RECALL What are the A site and the P site? How are...Ch. 12 - Prob. 26RECh. 12 - RECALL Describe the role of the stop signals in...Ch. 12 - Prob. 28RECh. 12 - RECALL What is the ShineDalgarno sequence? What...Ch. 12 - REFLECT AND APPLY You are studying with a friend...Ch. 12 - REFLECT AND APPLY E. coli has two tRNAs for...Ch. 12 - REFLECT AND APPLY In prokaryotic protein...Ch. 12 - REFLECT AND APPLY Describe the recognition process...Ch. 12 - REFLECT AND APPLY The fidelity of protein...Ch. 12 - REFLECT AND APPLY (a) How many activation cycles...Ch. 12 - REFLECT AND APPLY What is the energy cost per...Ch. 12 - Prob. 37RECh. 12 - Prob. 38RECh. 12 - Prob. 39RECh. 12 - Prob. 40RECh. 12 - Prob. 41RECh. 12 - Prob. 42RECh. 12 - Prob. 43RECh. 12 - Prob. 44RECh. 12 - Prob. 45RECh. 12 - Prob. 46RECh. 12 - Prob. 47RECh. 12 - RECALL What are two major similarities between...Ch. 12 - REFLECT AND APPLY Why do amino acids other than...Ch. 12 - REFLECT AND APPLY Would puromycin be useful for...Ch. 12 - Prob. 51RECh. 12 - Prob. 52RECh. 12 - Prob. 53RECh. 12 - Prob. 54RECh. 12 - Prob. 55RECh. 12 - Prob. 56RECh. 12 - REFLECT AND APPLY The amino acid hydroxyproline is...Ch. 12 - Prob. 58RECh. 12 - Prob. 59RECh. 12 - Prob. 60RECh. 12 - Prob. 61RECh. 12 - Prob. 62RECh. 12 - Prob. 63RECh. 12 - Prob. 64RECh. 12 - Prob. 65RECh. 12 - Prob. 66RECh. 12 - Prob. 67RECh. 12 - Prob. 68RECh. 12 - Prob. 69RECh. 12 - Prob. 70RECh. 12 - Prob. 71RECh. 12 - Prob. 72RECh. 12 - Prob. 73RE
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- REFLECT AND APPLY Why is a trimming process important in converting precursors of tRNA and rRNA to the active forms?arrow_forwardREFLECT AND APPLY Explain why a 50S ribosomal subunit and a 30S ribosomal subunit combine to form a 70S subunit, instead of an 80S subunit.arrow_forwardREFLECT AND APPLY E. coli incorporates deoxyribonucleotides into DNA at a rate of 250 to 1000 bases per second. Using the higher value, translate this into typing speed in words per minute. (Assume five characters per word, using the typing analogy from Question 36.)arrow_forward
- REFLECT AND APPLY You are studying with a friend who says that the hydrogen-bonded portions of tRNA play no important role in its function. What is your reply?arrow_forwardREFLECT AND APPLY List three molecular changes that take place in the processing of eukaryotic mRNA.arrow_forwardREFLECT AND APPLY List three mechanisms that relax the twisting stress in helical DNA molecules.arrow_forward
- REFLECT AND APPLY Would you expect mRNA or rRNA to be degraded more quickly in the cell? Why?arrow_forwardREFLECT AND APPLY It is possible for the codons for a single amino acid to have the first two bases in common and to differ in the third base. Why is this experimental observation consistent with the concept of wobble?arrow_forwardREFLECT AND APPLY Outline a mechanism by which RNA can catalyze its own self-splicing.arrow_forward
- REFLECT AND APPLY The structures of tRNAs contain several unusual bases in addition to the typical four. Suggest a function for the unusual bases.arrow_forwardREFLECT AND APPLY A sample of a peptide of unknown sequence was treated with trypsin; another sample of the same peptide was treated with chymotrypsin. The sequences (N-terminal to C-terminal) of the smaller peptides produced by trypsin digestion were as follows: MetValSerThrLysValIleTrpThrLeuMetIleLeuPheAsnGluSeArg The sequences of the smaller peptides produced by chymotrypsin digestion were as follows: AsnGluSerArgValIleTrpThrLeuMetIleMetValSerThrLysLeuPhe Deduce the sequence of the original peptide.arrow_forwardREFLECT AND APPLY Suppose that you are a prosecuting attorney. How has the introduction of the polymerase chain reaction changed your job?arrow_forward
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