Bio 305 Homework #4 PDF
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Myracle Welch
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This document is homework for a biology class. It contains questions regarding the impact of genetic mutations on mitochondrial energy production in yeast cells, and the role of oxygen in the citric acid cycle. It also discusses the mechanism of the drug Dinitrophenol (DNP).
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Bio 305 Homework #4 Name _______________________________________ Myracle welch 1. You discover a genetic mutation in round worms that eliminate cristae from the mitochondria? There is still an inner membrane and an outer membrane with the appropriate associated proteins, but the cristae are no longe...
Bio 305 Homework #4 Name _______________________________________ Myracle welch 1. You discover a genetic mutation in round worms that eliminate cristae from the mitochondria? There is still an inner membrane and an outer membrane with the appropriate associated proteins, but the cristae are no longer present. Discuss what might happen to the energy production of the yeast as well as what effect this would have on the overall size and/or function of the mutated yeast cells. (4pts) The production and In of yeast cells Mitochondria energy and the would be interaction significantly impacted between by the round wor ms lack of Cristae. 2. If the citric acid cycle does not use oxygen, why does the citric acid cycle stop almost immediately upon removal of O2? (HINT: Think about the role of O2 in energy production and how that would affect electron carrier production in the citric acid cycle.)(4pts) shotclowentaxon add cycleto Theremovalofoxygen willcausethecitric. 3. Dinitrophenol (DNP) is an uncoupler, or has the ability to separate the flow of electrons and the pumping of H ions for ATP synthesis. This means that the energy from electron transfer cannot be used for ATP synthesis. Fifty years ago, DNP was given as a drug to help patients lose weight. Why does this work? Why would this be dangerous? (3pts) + DNP weight exerts loss effects by uncoupling do , membrane The energy to to , oxidative phosphorylation and FADH2 To which ATP is produced from NAPH process by the inner protons across transports PNP. this complex The , bypassing create burn more. calones synthase the ATP transfer is released electron fro increases the. This ATP body's as heat. mitochondral used Instead of being metabolic rate and causes the body
