Which of the following electron carriers diffuses within the inner mitochondrial membrane to transport electrons? A. Cytochrome c B. Flavoproteins C. Fe-S Cluster Proteins D. Ubiquinol
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Which of the following electron carriers diffuses within the inner mitochondrial membrane to transport electrons?
| A. |
Cytochrome c |
|
| B. |
Flavoproteins |
|
| C. |
Fe-S Cluster Proteins |
|
| D. |
Ubiquinol |
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- When NADH and FADH2 are oxidized by the proteins in the electron transport chain, A) protons are pumped into the mitochondrial intermembrane space. B) hydrogen ions are pumped into the mitochondrial matrix. C) protons are pumped into the mitochondrial matrix. D) electrons are pumped into the cytoplasm.The function of cristae in a mitochondrion is A. electron transport and ATP synthesis B. carbon assimilation C. intake of o2 D. elimination of Co2Which statement about the ATP synthase is false? a. It is a rotary machine b. It is located in the inner mitochondrial membrane c. It can make ATP, or it can break ATP down d. It only contains membrane-embedded regions
- Which of the following statements is a lie? Select one: a.The formation of water aids in establishing the ion gradient between the inner matrix and intermembrane space. b.Every protein complex in the electron transport chain is involved in the direct pumping of H+ in the intermembrane space. c.There is an existing electrochemical gradient between the intermembrane space and the inner mitochondrial matrix.What happens as electrons move down the electron transport chain? A. their energy is used to pump hydrogen ions across the mitochondrial inner membrane B. they produce carbon dioxide and water C. the electrons are combined with ADP and phosphate to form ATP D. their energy is used to pump sodium ions across the mitochondrial inner membraneProteins in the inner mitochondrial membrane are involved in which of the following processes? a. nucleotide synthesis b. OXPHOS c. autophagy d. NADH synthesis
- In the Electron Transport Chain:(a). Upon the transfers, what is the final recipient of these electrons?(b). What is the compound obtained upon the completion of electron transportation?(c). What causes the changes in pH between the inner mitochondrial membrane during the electron transfer?During electron transport and ATP synthesis in eukaryotes, the H+ gradient accumalates in: a. The cytosol b. The mitochondrial matrix c. The mitochondiral intermembrane space d. Outside the mitochondriaDuring aerobic respiration, high energy electrons are taken from glucose and transferred to electron carriers. The cell then uses the energy from these electrons to: A) pump hydrogen ions across the inner mitochondrial membrane B) produce oxygen C) produce carbon dioxide D) make glucose E) reduce electron carriers
- Which of the following statements regarding CoQ is false a. It resides in the inner mitochondrial membrane b. It helps to pump protons after getting oxidized by complex 2 c. It is an electron carrier common to both nadh and fadh2 electron transport chains d. It is a hydrophobic proteinWhy is oxygen important in aerobic cellular respiration? a. Without oxygen, the Citric acid cycle will be disrupted b. Oxygen is the final electron acceptor during the electron transport chain c. they produce carbon dioxide and water d. It provides electrons during cellular respirationWhich of the following statements concerning ATP synthesis in mitochondria is FALSE? a. interruption of the flow of electrons from NADH to oxygen would decrease ATP synthesis b. making the inner mitochondrial membrane permeable to H+ would decrease ATP synthesis c. the energy liberated by the electron-transport chain is used to pump H+ ions into the IM-space d. the movement of H+ through a special channel enzyme (synthase) results in ATP synthesis e. when protons move from the matrix to the IM-space, ATP is made from ADP + Pi