Biochem test bank - Study guides, Class notes & Summaries

2024 NEW LEHNINGER BIOCHEM TEST BANK, CH. 17 CH. 18 CH. 19, CH. 21, COMPLETE EXAM QUESTIONS AND CORRECT ANSWERS VERIFIED BY EXPERTS|ALREADY GRADED A + TOPSCORE PASS!!! 2024 NEW LEHNINGER BIOCHEM TEST BANK, CH. 17 CH. 18 CH. 19, CH. 21, COMPLETE EXAM QUESTIONS AND CORRECT ANSWERS VERIFIED BY EXPERTS|ALREADY GRADED A + TOPSCORE PASS!!! 2024 NEW LEHNINGER BIOCHEM TEST BANK, CH. 17 CH. 18 CH. 19, CH. 21, COMPLETE EXAM QUESTIONS AND CORRECT ANSWERS VERIFIED BY EXPERTS|ALREADY GRADED A + TOPSCORE...

Ch. 14 Lehninger biochem test bank Questions and Correct Answers

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. D) It requires one ATP per mol of N2 fixed. E) It requires two key protein components, each containing iron. - D 2. Which of the following is not true about the anammox reaction? A) Anammox co...

Ch. 19 Lehninger biochem test bank Questions and Correct Answers.

1. Which of the following does not contribute to the regulation of enzymatic activity? A) Protein phosphorylation B) Allosteric regulation C) Protein stability D) mRNA stability E) DNA stability - E 2. For an enzyme to effectively change its activity in response to a change in substrate concentration, it is most favorable for: A) Km to be less than cellular substrate concentrations. B) Km to be equal to cellular substrate concentrations. C) Km to be greater than cellular substrate conc...

Lehninger biochem test bank 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 the lipoyl-lysine "swinging arm." E) Two different cofactors containing —SH groups participate. - ANS A 2. Which of the below is not required for the ox...

Lehninger biochem test bank 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 - ANS B 2. Which of these is not a protease that acts in the small intestine? A) Chymotrypsin B) Elastase C) Enteropeptidase D) Secretin E) Trypsin - ANS D 3. In the digestion of protein that occurs in the small in...

Ch. 18 Lehninger biochem test bank Questions and Correct Answers.

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 intestine? A) Chymotrypsin B) Elastase C) Enteropeptidase D) Secretin E) Trypsin - D 3. In the digestion of protein that occurs in the small intestine, which enzyme is critical in the activation of zymo...

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 reaction A --->B, delta G'° = -60 kJ/mol. The reaction is started with 10 mmol of A; no B is initially present. After 24 hours, analysis reveals the presence of 2 mmol of B, 8 mmol of A. Which is the most li...