Chapter 22: Problem 25
Give two examples of saturated hydrocarbons. How many other atoms are bonded to each carbon in a saturated hydrocarbon?
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Chapter 22: Problem 25
Give two examples of saturated hydrocarbons. How many other atoms are bonded to each carbon in a saturated hydrocarbon?
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The base sequences in mRNA that code for certain amino acids are Glu: GAA, GAG Val: GUU, GUC, GUA, GUG Met: AUG Trp: UGG Phe: UUU, UUC Asp: GAU, GAC These sequences are complementary to the sequences in DNA. a. Give the corresponding sequences in DNA for the amino acids listed above. b. Give a DNA sequence that would code for the peptide trp–glu–phe–met. c. How many different DNA sequences can code for the tetrapeptide in part b? d. What is the peptide that is produced from the DNA sequence T–A–C–C–T–G–A–A–G? e. What other DNA sequences would yield the same tripeptide as in part d?
Give the structure for each of the following. a. 4-methyl-1-pentyne b. 2,3,3-trimethyl-1-hexene c. 3-ethyl-4-decene
Considering your answers to Exercises 142 and 143, how can you justify the existence of proteins and nucleic acids in light of the second law of thermodynamics?
Mycomycin, a naturally occurring antibiotic produced by the fungus Nocardia acidophilus, has the molecular formula \(\mathrm{C}_{13} \mathrm{H}_{10} \mathrm{O}_{2}\) and the systematic name \(3,5,7,8\) -tridecatetraene- \(10,12\) -diynoic acid. Draw the structure of mycomycin.
Aspartame, the artificial sweetener marketed under the name NutraSweet, is a methyl ester of a dipeptide: a. What two amino acids are used to prepare aspartame? b. There is concern that methanol may be produced by the decomposition of aspartame. From what portion of the molecule can methanol be produced? Write an equation for this reaction.
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