CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
12th Edition
ISBN: 9780136920335
Author: Urry
Publisher: PEARSON
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Chapter 8, Problem 3TYU

Which of the following metabolic processes can occur without a net influx of energy from some other process?

  • (A) ADP + Ⓟi → ATP + H2O
  • (B) C6H12O6 + 6 O2 → 6CO2 + 6 H2O
  • (C) 6 CO2 + 6 H2O → C6H12O6 + 6 O2
  • (D) Amino acids → Protein
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Assume that it is possible to label each of the molecules below with 18O a heavy isotope of oxygen. As a result of cellular respiration, water containing 18O would most quickly be detected if cells are provided with which one of the following molecules labeled with 18O? a) pyruvate (C3H3O3) b) glucose (C6H12O6) c) carbon dioxide (CO2) d) molecular oxygen (O2)
Consider a hypothetical metabolic pathway involving four enzymes to convert molecule A into molecule E: Enz, E Enz 1 Enz 2 Enz 3 A 1) A O2) B Which molecule is most likely to be a feedback inhibitor that, when present in high concentrations, will reduce the flow of material through the pathway? 3) C 04) D B 05) E C D 6) none of these The activity of an allosteric enzyme will be greatest when 1) the pH is optimal for the enzyme. 2) most of the enzyme molecules are in the R conformation. 3) most of the enzyme molecules are in the T conformation. 4) there are equal numbers of enzyme molecules in the R and T conformations. puiss What will be the effect on the structure of an allosteric enzyme if a negative allosteric effector is added to a solution of the enzyme? 1) There will be a shift in the equilibrium between the R and T forms; the amount of T will increase. 2) There will be a shift in the equilibrium between the R and T forms; the amount of R will increase. 3) The enzyme will be…
Consider a hypothetical metabolic pathway involving four enzymes to convert molecule A into molecule E: Enz 1 Enz 2 C Enz 3 A O2) B Which molecule is most likely to be a feedback inhibitor that, when present in high concentrations, will reduce the flow of material through the pathway? 1) A 3) C 4) D B OS) E D 6) none of these Enz4 E
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