chapter27 - Chapter 27 Protein Metabolism Multiple Choice...

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Chapter 27 Protein Metabolism Chapter 27 Protein Metabolism Multiple Choice Questions 1. The genetic code Page: 1069 Difficulty: 2 Ans: C A certain bacterial mRNA is known to represent only one gene and to contain about 800 nucleotides. If you assume that the average amino acid residue contributes 110 to the peptide molecular weight, the largest polypeptide that this mRNA could code for would have a molecular weight of about: A) 800. B) 5,000. C) 30,000. D) 80,000. E) An upper limit cannot be determined from the data given. 2. The genetic code Page: 1038 Difficulty: 2 Assuming that the average amino acid residue contributes 110 to the peptide molecular weight, what will be the minimum length of the mRNA encoding a protein of molecular weight 50,000? 3. The genetic code Pages: 1070-1074 Difficulty: 3 Which of the following are features of the wobble hypothesis? 4. The genetic code Page: 1069 Difficulty: 2 Which one of the following is true about the genetic code? 57
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5. Protein synthesis Pages: 1076-1077 Difficulty: 1 Ans: D Which one of the following statements about ribosomes is true? A) The large subunit contains rRNA molecules, the small subunit does not. B) The RNA in ribosomes plays a structural, not catalytic, role. C) There are about 25 of them in an E. coli cell. D) There are two major subunits, each with multiple proteins. E) They are relatively small, with molecular weights less than 10,000. 6. Protein synthesis Pages: 1079-1080 Difficulty: 2 Which of the following statements about tRNA molecules is false ?
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