Question

7. In certain species of plants, mutations can cause the electron transport chain connecting PSII to PSI to flip orientation. This change in orientation causes the electron transport chain to become ordered in terms of decreasing electronegativity instead of increasing electronegativity. What portions of photosynthesis will be affected by this change in the orientation of the electron transport chain? Why? 8. A mutation in the genome of a plant prevents proper folding of rubisco. How would this impact the Calvin Cycle? 9. Another problem the evil mad scientist trying to make space humans is encountering relates to the metabolism of the space humans. Because there is no oxygen available in space, the space humans are having difficulty generating enough energy to survive. Why would this be? What other problems might result due to the lack of oxygen? (Think about how metabolism occurs anaerobically). 10. Certain species of aquatic algae specialize in harvesting purple wavelengths of light to conduct photosynthesis. What changes would you expect in terms of the chlorophyll pigments located within the photosystems that would allow these plants to generate energy through photosynthesis? Why? 11. Describe how the structure of the mitochondria OR the chloroplast aids in function. 12. Why do the chlorophyll a molecules in photosystem II have an optimal absorbance of light at 680 nm, while the chlorophyll a molecules in photosystem I have an optimal absorbance of light at 700 nm? What does this tell you about the transfer of energy between these two photosystems during the light reactions? 13. Describe the differences between photosynthesis and cellular respiration in terms of redox chemistry. 14. Considering what you know about how atmospheric oxygen changed over the 4.5 billion years that life has existed on earth, which metabolic process, photosynthesis or cellular respiration via oxidative phosphorylation, likely evolved first? Why? 15. Two new diets and exercise regimes have just been developed by Instagram influencers! One influencer is advocating for anaerobic training, where the body is pushed to the point that oxygen available to muscle cells is limited. The other influencer is arguing for aerobic training, where exercise is done in the presence of excessive amounts of oxygen. Trust issues associated with listening to Instagram personalities aside, what type of diet would complete each of these exercise regimes (what type of biological macromolecules would complement each work out strategy)? Why?

Answer 1

Drewes :- 7) The light recutions of phenotosynthesis produce the bellowing compounds. ů ATP 1) NADPH (ii) moleular weggen. water ý the ultimate donde of protons and Eletrons to the electron trompport chain. It the Elation tremsport chain in reversed, ATP and NADPH are not produced.. & RUBISCO catalyzes the conbonylation of RVB b. (prenary co2 acceptin in C3 plants). It is the most abundant enzyme on Earth. It RUBISCO is nonfunctional, Calvin cycle cannot operate and carbohydrate connot be produced. 9) Aerobic respiration produce mole ATP Compared to anaerobic respiration. – Aerobic respiration of Inl of glucose produces 32-38 ATP. Anaerobic respiration of 1 mol of greuse preces 2 ATP please Rede my Anniver..