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- 33) True or False: Plants undergo photosynthesis to make glucose using light energy. Plants also use cellular respiration to break down glucose and convert it into energy (stored as ATP). A) True B) FalseQ.1. Give Schematic representation of Photophosphorylation.A substance obtained from Willow bark in 1973 was found to reduce fever resulting from malaria, and about a century later to relieve the pain of rheunmatism. What is the ingredient in Willow bark extract? Discuss the proposed mechanism of its action.
- 43) Which of the following is false? A) C3, C4, and CAM plants use the light dependent reactions to harvest energy from the sun and light independent reactions to turn that energy into sugar. B) C3 plants use photorespiration (as opposed to the Calvin Cycle) when CO2 is low ) C4 plants utilize a specialized carbon fixation enzyme and a unique cell structure to reduce the problems of photorespiration D) CẢM plants perform all of the steps of photosynthesis at night to avoid e photorespirationIdentify secondary metabolites produced by a plant in the following scenarios and explain how it works as plant defense mechanism. () Pungent smell produced during the processing of raw Chinese Kailan. (ii) Improperly cook or prepared cassava chips.Explain THREE (3) reasons why photosynthetic rate is reduced under water deficit.
- I have recently purchased a bottle of essential oil to be used as mosquito repellent. Classify the essential oil into the relevant group of secondary metabolites. Describe the distinctive scent produced and name the plant in which this essential oil could be (i) extracted. What are the roles of terpenes in plant defense and provide ONE (1) suitable solvent to be used for extraction? (ii)a) What makes photorespiration disadvantageous regarding crop yields?b) Describe how the AP3 pathway bypasses photorespirationAside from Avocado seeds, what are the other excellent materials for production of Granular Activated Carbons (GAC)?
- A. The C4 plant performs photosynthesis more efficiently than the C3 when the CO2 concentration is 600ppm or less. Provide one reason why the rate of photosynthesis doesn’t change for the C4 plant when the CO2 concentration increases above 400 ppm. B. Discuss what is happening in the C3 plant when the CO2 levels are below 50 ppm. Provide one reason why this does NOT happen to the C4 plant.22. A process called takes place in the dark phase of photosynthesis. a) When does this phenomenon take place? b) What happens during the dark phase? c) What would be the consequences if there was no dark phase dormancy of the photosynthesis?Explain the importance of Stemoamide ?