The transportation of fatty acids into the mitochondria for oxidation occurs by...... O Facilitated diffusion O Active transport O Passive transport O Simple diffusion
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- Oxidative Phosphorylation (electron transport chain + chemiosmosis) What goes in? What comes out? What happens to the energy that is released? Where does each step occur? What biproducts or molecules are produced or consumed (such as NADH, FADH2, CO2, ATP/GTP, O2, so on...). How is it regulated?There are many things that need to be brought into and out of the cell for cellular respiration. When you look at cellular membranes, including the mitochondrial membrane you can find transporters for many of these things, including glucose and ATP. However, we never find transporters for Oxygen (O2) or Carbon Dioxide (CO2). Why would the cell not require transporters for these molecules?The creation of the H+ gradient in the mitochondria that powers ATP synthase is an example of: a)Diffusion b)Passive Transport c)Active Transport
- With the choices below where does (a) catabolic pathway; and (b) anabolic pathway take place? a. Cytoplasmb. Mitochondriac. Smooth endoplasmic reticulumd. NucleusWhat would be the effect on ATP production during chemiosmosis and oxidative phorphorylation, if the pH within the inner membrane space of the mitochondrion were decreased, assuming no effect of pH on the structure of proteins in the membrane? a) it would increase b) it would decrease c)it would stay the sameCyanide inhibits cytochrome c oxidase, a component of the electron transport chain. If cyanide poisoning occurs, would you expect the pH of the intermembrane space to increase or decrease? What effect would cyanide have on ATP synthesis?
- a) Explain how in oxygenated tissue your cells use your MITOCHONDRIA to produce energy: DESCRIBE the processes occurring in your MITOCHONDRIA (intermediate stage, Krebs, and ETC), Make sure to mention where those processes occur.b) How many ATP per glucose are formed in your mitochondria? Where are they formed?You are studying the process of oxidative phosphorylation in the lab. You isolate several mitochondria from cells and place them in a buffered solution with a low pH and observe that the mitochondria begin to synthesize ATP. Which of the following is the best explanation for this observation? F It increases the conc. of OH-, causing the mitochondria to pump H+ to the intermembrane space. It increases the diffusion of H+ from the mitochondrial matrix to the intermembrane space. It increases the diffusion of H+ from the intermembrane space to the matrix. It increases the conc. of OH- in the mitochondrial matrix.The Synthesis of ATP synthase is called?
- Sometimes, ATP is referred to as the “energy-storage molecule.” The cell does not actually store energy as a lot of extra ATP but as glycogen or triacylglycerides. Why do you suppose this is the case?Consider the following diagram when answering the questions about cellular respiration. (a) Label the diagram. (b) Considering the electron transport chain. Why type of cell transport is happening at the ETC? Explain. (c) What type of cell transport is happening at ATP synthase? Explain. B A D EWhich of the following statements is FALSE regarding oxidative phosphorylation? The pH is higher in the matrix relative to that in the inter-membrane space. A large positive difference in reduction potential is associated with a small negative free energy change. Electrons from FADH2 enter at complex II because the reduction potential of FADH2 is greater than that of redox centers in complex I. Oxidation and phosphorylation are coupled via a proton gradient.
