rmat Tools Table Window Help RespirationMetabolismWUs18 (1) Layout References Ma
ID: 207199 • Letter: R
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rmat Tools Table Window Help RespirationMetabolismWUs18 (1) Layout References Mailings Review View date with security updates, fixes, and improvements, choose Check for Updates. 9. (05) Is ADP + Pi ATP exergonic or gndergonit!circle or underline one)? 10. (0.5) What is the product of substrate-level phosphorylation? 11. (2) When you burn fat for food, what happens to the carbons in the triglycerides? (a) what are the names of the two pathways in which the fatty acids are oxidized, and (b) what is the last molecule of which they are a part? 12. (15) Victims of cyanide poisoning, which inhibits complex iV (cytochrome oxidae) of the ETC, often Explain why this happens, including all the show an increased level of lactic acid in the brain. products of all the relevant pathways 13. (1) Imagine that you are examining the effect of prolonged, low-dose exposure of mice to cyanide and you found that liver weight decreased slightly but significantly in the experimental mice. What would be your explnation of this phenomenon? 14. (1) What is the source of the heat in brown fat Plot AreaExplanation / Answer
(9)
Formation of ATP is an endergonic reaction
Endergonic reactions consume energy
(10)Substrate-level phosphorylation is directly phosphorylating ADP with a phosphate to form ATP. The energy is provided from a coupled reaction.
(11)
When we burn fat for food the carbons in the triglycerides are converted to acetylcoA and finally oxidized to CO2.
beta-oxidation pathway oxidizes even carbon fatty acids
Fatty acids with odd number of carbon atoms are oxidized through propionyl CoA intermediate and acetyl CoA,
(12)
Cyanide blocks the complex IV, thereby stalling electron transport chain. With oxygen not being available as terminal acceptor of electron, NAD+ has to be replenished for running glycolysis. Pyruvate undergoes reduction by lactate dehydrogenase oxidizes NADH and forms lactate and NAD+.
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