exisence of oxidative phosphoryation is based on several lines of experimental e
ID: 257462 • Letter: E
Question
exisence of oxidative phosphoryation is based on several lines of experimental evidence. Which of ents regarding experimental observations does NOT support the oxidative the following statem phosphorylation model? A) Electron transport causes acidification of the intermembrane space B) Uncoupling agents that abolish the proton gradient also abolish ATP synthesis. C) Oxidative phosphorylation does not require a membrane-enclosed compartment. D Artificial proton gradients established by the addition of an acid can drive ATP synthesis in the absence of electron transport. E) The proton gradient established by electron transport has enough energy to drive ATP synthesis 19) Which of the following statements is true regarding the ATP molecule? A) resonance stabilization is increased in the ATP molecule B) The ATP molecule is more stable compared to ADP C) The three phosphate groups of ATP repel one another, increasing the overall free energy of the ATP molecule D) ATP is an amino acid. E) ATP hydrolysis is endergonic 20) True or False?: During oxidative phosphorylation, electrons are transferred to ATP synthase to facilitate 2 ATP production. A) True B) False 21) Hexokinase catalyzes the first reaction of glycolysis in which glucose is phosphorylated to produce 21) +glucose-6-phosphate (G6P). Which of the following molecules, in high concentration, would activate hexokinase? A) NADH B) citrate C) ATP D) AMP 22) organisms TAKE IN ands for direct use as BOTH an energy source 22) and carbon source. A) heterotrophic; organic B) photoautotrophic, organic C) heterotrophic, inorganic D) photoautotrophic, inorganic E) both A and D 23) Which of the following BEST describes the main purpose of the combined processes of glycolysis and 23) aerobic respiration? A) catabolism of sugars and related compounds B) breaking down ATP, so that ADP and P can be reused C) transforming the energy in glucose and related molecules into another chemical form that cells can use for work D) producing complex molecules from chemical building blocks E) the breakdown of glucose to carbon dioxide and water 24) 24) The coding sequence of a gene contains the following codon: 5-GAC-3. Which amino acid will be produced by this codon? A) leucine B) glutamine C) aspartic acid D) valinc 25) The process of would be activated when glucose is in excess and the cell does not need additional energy in the form of ATP A) glycolysis D) glycogenolysis
Explanation / Answer
18. C. Oxidative phosphorylation does not require a membrane enclosed compartment.
Oxidative phosphorylation is the process in which ATP is formed as a result of the transfer of electrons from NADH or FADH2 to O2 by a series of electron carriers which are located within the inner mitochondrial membrane.
19. C.
The three phosphate groups in an ATP molecule carry negative charges that strongly repel each other and give ATP a large amount of potential energy.
20. FALSE.
In oxidative phosphorylation, energy released from electron flow is used to transport protons across mitochondrial membrane which generates potential energy. This energy is used by ATP Synthesase to form ATP.
21. C. ATP.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.