arriers, kindly give their alternative names Electron Transport Chain Intermembrane space brane space 5 3 Mitochondrial magix FADH₂ DH NAD + H 6 FAD 2H* + 1/20₂ H₂O Inner mitochondrial membrane drial matrix me of the Transporter 2e- 7 Inner mitochondrial membrane ATP ADP Essential Features
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- Although the outer mitochondrial membrane is permeable to all small molecules, the inner mitochondrial membrane is essentially impermeable in the absence of specific transport proteins. Consider this information answer: If the inner mitochondrial membrane were rendered as permeable as the outer membrane, how would that affect oxidative phosphorylation? Which specific processes would stop and which remain?Although the outer mitochondrial membrane is permeable to all small molecules, the inner mitochondrial membrane is essentially impermeable in the absence of specific transport proteins. Consider this information answer: The ATP generated by oxidative respiration is used throughout the cell. The majority of ATP production occurs in the mitochondrial matrix. How do you think ATP is made accessible to enzymes in the cytosol and other organelles?Movement of glucose from one side to the other side of the intestinal epithelium is a major example of transcellular transport. How does the Na+/K+ ATPase power the process? Why are tight junctions essential for the process? Why is localization of the transporters specifically in the apicalor basolateral membrane crucial for transcellular transport? Rehydration supplements such as sport drinks include a sugar and a salt. Why are both important to rehydration?
- According to the chemiosmotic theory, what would be theeffect on oxidative phosphorylation of allowing otherpositive ions to diffuse across the inner mitochondrialmembrane?АCTMTY 10.6.1 Label the diagram and explain the salient feature that is happening in each item. For the complexes and the mobile carriers, kindly give their alternative names Electron Transport Chain Jae Intermembrane space FADH NADH FAD 2+ í20, NAD +H ATP AOP Minochondrial matri Inner mitochondrial membrane Name of the Transporter Essential Features 1. 2. 3. 4. 5. 6. 7. 2.If isolated mitochondria are incubated with asource of electrons such as succinate, but without oxygen,electrons enter the respiratory chain, reducing each of theelectron carriers almost completely. When oxygen is thenintroduced, the carriers become oxidized at different rates(Figure Q14–1). How does this result allow you to order the electron carriers in the respiratory chain? What is theirorder?
- (b) The GLUT system is highly selective for glucose. It also speeds up the rate of glucose transport across the membrane by as much as 100-fold when compared to the passive diffusion of glucose across a bilayer in the absence of any transport system. While impressive, this rate of transport is much slower than purely diffusion limited rate of movement (ie. the fastest a molecule can move by diffusion). Given this fact, on the blank plot below draw the expected relationship between the rate of GLUT-mediated transport and increasing [glucose]? Use the space below the graph to explain your answer. fast Transport Rate slow low [glucose] high (c) Next, use a dashed line on the same plot above to draw the shape of the curve when the amount of GLUT transporters in the membrane is cut in half. Briefly explain your answer in the space provided below the graph.The inner mitochondrial membrane exhibits all of the fundamental characteristics of a typical cell membrane, but it also has several unique characteristics that are closely associated with its role in oxidative phosphorylation. What are these unique characteristics? How does each contribute to the function of the inner membrane?When William H. was helping victims after a devastating earthquake in a region not prepared to swiftly set up adequate temporary shelter, he developed severe diarrhea. He was diagnosed as having cholera, a disease transmitted through unsanitary water supplies contaminated by fecal material from infected indiv iduals. The toxin produced by cholera bacteria causes Cl- channels in the lurninal membranes of the intestinal cells to stay open, thereby increasing the secretion of Cl- from the cells into the intestinal tract lumen. By what mechanisms would Na+ and water be secreted into the lumen in conjunction with Cl- secretion? How does this secretory response account for the severe diarrhea that is characteristic of cholera?
- Although the outer mitochondrial membrane is permeable to all small molecules, the inner mitochondrial membrane is essentially impermeable in the absence of specific transport proteins. Consider this information answer: Present two types of benefits derived from separating the reactions of glycolysis in the cytosol from those that occur during the citric acid cycle in the mitochondrion.Which statements are true? Explain why or why not.1 Transport by transporters can be either active orpassive, whereas transport by channels is always passive.2 Transporters saturate at high concentrations ofthe transported molecule when all their binding sites areoccupied; channels, on the other hand, do not bind theions they transport and thus the flux of ions through achannel does not saturate.3 The membrane potential arises from movementsof charge that leave ion concentrations practically unaf-fected, causing only a very slight discrepancy in the num-ber of positive and negative ions on the two sides of themembrane.When blood glucose level rises, the pancreas secretes insulin, and as a result blood glucose level declines. When blood glucose level is low, the pancreas secretes glucagon, and as a result blood glucose level rises. Such regulation of blood glucose level is the result of A reproduction thermal regulation community homeostasis 2,279 12 tv N MacBook Air DII DD F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F1 @ %23 24 2 6. %3D * CO