04:21ELECTRON TRANSPORT CHAIN ANIMATION - Biochemistry High-yield Usmle step 1Dr.G Bhanu Prakash Animated Medical Videos706
01:55Cellular Respiration Part 3: The Electron Transport Chain and Oxidative PhosphorylationProfessor Dave Explains3602
Multiple ChoiceIn the electron transport chain, the final electron acceptor is:a) H2O.b) CO2.c) H2O.d) O2.e) NAD+.15666Has a video solution.
Multiple ChoiceWhich of the following events takes place in the electron transport chain?a) The breakdown of glucose into six carbon dioxide molecules.b) The breakdown of NADH and FADH2 to carbon dioxide.c) Harnessing energy from high-energy electrons derived from glycolysis, pyruvate oxidation, and the Krebs cycle.d) Substrate-level phosphorylation.317610Has a video solution.
Multiple ChoiceMost of the electrons removed from glucose by cellular respiration are used for which of the following processes? 611
Multiple ChoiceIn eukaryotic cells, the components of the electron transport chain are located in or on __________. 347
Multiple ChoiceWhen a poison such as cyanide blocks the electron transport chain, glycolysis and the citric acid cycle also eventually stop working. Which of the following is the best explanation for this? 725
Textbook QuestionIn mitochondria, exergonic redox reactions a. are the source of energy driving prokaryotic ATP synthesis. b. provide the energy that establishes the proton gradient. c. reduce carbon atoms to carbon dioxide. d. are coupled via phosphorylated intermediates to endergonic processes774Has a video solution.
Textbook QuestionCyanide binds to at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the cyanide will be found within the a. mitochondria. b. ribosomes. c. peroxisomes. d. lysosomes.1684Has a video solution.
Textbook QuestionWhen electrons flow along the electron transport chains of mitochondria, which of the following changes occurs? a. The pH of the matrix increases. b. ATP synthase pumps protons by active transport. c. The electrons gain free energy. d. NAD+ is oxidized.1237Has a video solution.
Textbook QuestionThe poison cyanide binds to an electron carrier within the electron transport chain and blocks the movement of electrons. When this happens, glycolysis and the citric acid cycle soon grind to a halt as well. Why do you think these other two stages of cellular respiration stop? (Explain your answer.) a. They run out of ATP. b. Unused O2 interferes with cellular respiration. c. They run out of NAD+ and FAD. d. Electrons are no longer available.1249Has a video solution.
Textbook QuestionThe electron transport chain                   . a. is located in the matrix of the mitochondrion; b. has the electronegative carbon dioxide at its base; c. is a series of nucleotides located in the inner mitochondrial membrane; d. is a series of enzymes located in the intermembrane space; e. moves electrons from protein to protein and moves protons from the matrix into the intermembrane space574Has a video solution.
Textbook QuestionThe researchers who observed that magnetite was produced by bacterial cultures from the deep subsurface carried out a follow-up experiment. These biologists treated some of the cultures with a drug that poisons the enzymes involved in electron transport chains. In cultures where the drug was present, no more magnetite was produced. Does this result support or undermine their hypothesis that the bacteria in the cultures perform cellular respiration? Explain your reasoning.160Has a video solution.
Textbook QuestionThe researchers who observed that magnetite was produced by bacterial cultures from the deep subsurface carried out a follow-up experiment. These biologists treated some of the cultures with a drug that poisons the enzymes involved in electron transport chains. In cultures where the drug was present, no more magnetite was produced. Does this result support or undermine their hypothesis that the bacteria in the cultures perform cellular respiration? Explain your reasoning.139Has a video solution.
Textbook QuestionCyanide (C≡N−) blocks complex IV of the electron transport chain. Suggest a hypothesis for what happens to the ETC when complex IV stops working. Your hypothesis should explain why cyanide poisoning in humans is fatal.461Has a video solution.
