Cell Respiration video and chapter 1. (2) What is the source of electrons in the

Question

Cell Respiration video and chapter 1. (2) What is the source of electrons in the mitochondrial electron transport chain? And where do the electrons end up once they pass through the chain? 2. (2) Molecules called uncouplers (such as dinitrophenol) poke holes in the inner mitochondrial membrane. What effect would this have on aerobic respiration? From The Joy of Fermentation Video 3. (2) Define "exogenous” and “endogenous" electron acceptors. 4. (4) The conversion of pyruvate to lactate in lactic acid fermentation and the conversion of pyruvate to ethanol in alcoholic fermentation does not produce ATP - and in fact, both ethanol and lactate are waste products. So why do cells run fermentation reactions? Photosynthesis video and chapter 5. (2) Why are plants green? 6. (2) What is the source of the electrons in the electron transport chain in the chloroplast? And where do the electrons end up once they pass through the chain? 7. (4) In hot and dry climates, plants face extra challenges... when their stomata are open, plants can do the gas exchange they need for photosynthesis, but they also lose water. However, closing stomata to prevent water loss causes the internal levels of CO2 to fall... and this presents a problem because when plants run out of CO2, the enzyme RuBisCO will bind oxygen instead in a process called photorespiration. Define photorespiration and explain the two main strategies plants use to prevent it (they are called C4 plants and CAM plants).

Explanation / Answer

1) Water is the source of electron in electron transport chain as the hydrolysis reaction generates proton and elecron.

These electrons end up on NADP converting it to NADPH.

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