1. Which of the following statements about the fixation of atmospheric nitrogen (N2) into NH3 by living cells is false? A) It involves the transfer of eight electrons per mol of N2. B) It occurs in certain microorganisms, but not in humans. C) It requires a source of electrons, normally ferredoxin...
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Which of the following pairs of bonds within a peptide backbone show free rotation around both bonds? A) C = O and N - C B) C = O and N - Cn C) Cα - C and N - Cα D) N - C and Cα - C E) N - Cα and N - C D) N - C and Cα - C Thr and/or Leu residues tend to disrupt an α helix when they occu...
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Add to cartWhich of the following pairs of bonds within a peptide backbone show free rotation around both bonds? A) C = O and N - C B) C = O and N - Cn C) Cα - C and N - Cα D) N - C and Cα - C E) N - Cα and N - C D) N - C and Cα - C Thr and/or Leu residues tend to disrupt an α helix when they occu...
1. If the delta G'° of the reaction A --> B is -40 kJ/mol, under standard conditions the reaction: A) is at equilibrium. B) will never reach equilibrium. C) will not occur spontaneously. D) will proceed at a rapid rate. E) will proceed spontaneously from A to B. E For the reactio...
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Add to cart1. If the delta G'° of the reaction A --> B is -40 kJ/mol, under standard conditions the reaction: A) is at equilibrium. B) will never reach equilibrium. C) will not occur spontaneously. D) will proceed at a rapid rate. E) will proceed spontaneously from A to B. E For the reactio...
1. Under which circumstances are amino acids not metabolized via oxidative degradation? A) Starvation B) Plants growing in nutrient-rich soils C) Normal protein turnover D) A diet rich in proteins E) Uncontrolled diabetes B 2. Which of these is not a protease that acts in the small in...
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Add to cart1. Under which circumstances are amino acids not metabolized via oxidative degradation? A) Starvation B) Plants growing in nutrient-rich soils C) Normal protein turnover D) A diet rich in proteins E) Uncontrolled diabetes B 2. Which of these is not a protease that acts in the small in...
1. Which of the following is not true of the reaction catalyzed by the pyruvate dehydrogenase complex? A) Biotin participates in the decarboxylation. B) Both NAD+ and a flavin nucleotide act as electron carriers. C) The reaction occurs in the mitochondrial matrix. D) The substrate is held by t...
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Add to cart1. Which of the following is not true of the reaction catalyzed by the pyruvate dehydrogenase complex? A) Biotin participates in the decarboxylation. B) Both NAD+ and a flavin nucleotide act as electron carriers. C) The reaction occurs in the mitochondrial matrix. D) The substrate is held by t...
The chirality of an amino acid results from the fact that its α carbon: A) has no net charge. B) is a carboxylic acid. C) is bonded to four different chemical groups. D) is in the L absolute configuration in naturally occurring proteins. E) is symmetric. C) is bonded to four different chemica...
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Add to cartThe chirality of an amino acid results from the fact that its α carbon: A) has no net charge. B) is a carboxylic acid. C) is bonded to four different chemical groups. D) is in the L absolute configuration in naturally occurring proteins. E) is symmetric. C) is bonded to four different chemica...
1. The most precise modern definition of a gene is a segment of genetic material that: A) codes for one polypeptide. B) codes for one polypeptide or RNA product. C) determines one phenotype. D) determines one trait. E) that codes for one protein. B. codes for one polypeptide or RNA product ...
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Add to cart1. The most precise modern definition of a gene is a segment of genetic material that: A) codes for one polypeptide. B) codes for one polypeptide or RNA product. C) determines one phenotype. D) determines one trait. E) that codes for one protein. B. codes for one polypeptide or RNA product ...
1. Which of the following statements about the fixation of atmospheric nitrogen (N2) into NH3 by living cells is false? A) It involves the transfer of eight electrons per mol of N2. B) It occurs in certain microorganisms, but not in humans. C) It requires a source of electrons, normally ferredo...
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Add to cart1. Which of the following statements about the fixation of atmospheric nitrogen (N2) into NH3 by living cells is false? A) It involves the transfer of eight electrons per mol of N2. B) It occurs in certain microorganisms, but not in humans. C) It requires a source of electrons, normally ferredo...
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