27.rtf - Name Date A B C D E 1.A certain bacterial mRNA is...

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Name: __________________________ Date: _____________ 1.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.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.Which statement describes a feature of the wobble hypothesis? 4.Which statement is TRUE about the genetic code? 5.Which statement is NOT true about RNA editing? A) RNA editing occurs mostly in mitochondria and chloroplasts. B) RNA editing requires guide RNAs that have sequences complementary to the edited Page 1
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mRNA. C) Deamination of G is a common reaction in RNA editing. D) Deamination of A is common reaction in RNA editing. E) RNA editing allows for the synthesis of two different proteins from one gene. 6.Which step is NOT one of the five steps of protein synthesis? 7.Which statement about ribosomes is TRUE? D) There are two major ribosomal subunits, each with multiple proteins. E) Ribosomes are relatively small, with molecular weights less than 10,000.
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  • Fall '08
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  • RNA

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