2. Which wavelength of light is least useful to driving photosynthesis? 3. What result of Theodor Engelmann's famous experiment indicated to him which wavelength(s) was/were the best drivers of photosynthesis? 4. A scientist removes the pair of chlorophyll a molecules from the reaction-center complex. Which of the following consequences would be most likely to occur? A) The primary electron acceptor would capture boosted electrons from the light-harvesting complex. B) The transfer of energy from the light-harvesting complex to the reaction-center complex would stop. C) Light would be absorbed twice as fast to make up for the loss of the chlorophyll a pigments. D) None of the above consequences would occur. 5. Fill in the following table regarding the photosystems of the light reactions. Photosystem I Photosystem II Product Splits H2O? Uses an electron transport chain? Contains an electron acceptor? Chapter Content: The Calvin Cycle: Making Sugar from Carbon Dioxide Complete the following questions as you read the seventh chapter content—The Calvin Cycle: Making Sugar from Carbon Dioxide: 1. The Calvin cycle uses ATP + ____ produced during the ____ reactions to make ____ from ____ in the air.
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The wavelength of light least useful to driving photosynthesis is green light (around 500-550 nm). This is because chlorophyll, the main pigment involved in photosynthesis, reflects green light and absorbs mainly blue and red light. Show more…
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Which wavelength of light is least useful to driving photosynthesis? What result of Theodor Engelmann's famous experiment indicated to him which wavelength(s) were the best drivers of photosynthesis? The scientist removes the pair of chlorophyll molecules from the reaction center complex. Which of the following consequences would be most likely to occur? The primary electron acceptor would capture boosted electrons from the light-harvesting complex. The transfer of energy from the light-harvesting complex to the reaction center complex would stop. Light would be absorbed twice as fast to make up for the loss of the chlorophyll pigments. None of the above consequences would occur. Fill in the following table regarding the photosystems of the light reactions: Photosystem I Photosystem II Product Splits H2O? Uses an electron transport chain? Contains an electron acceptor? Chapter Content: The Calvin Cycle: Making Sugar from Carbon Dioxide Complete the following questions as you read the seventh chapter content The Calvin Cycle: Making Sugar from Carbon Dioxide: The Calvin cycle uses ATP from the light reactions to make sugar.
Adi S.
9. Sunlight contains all the colors of the visible spectrum (red, orange, yellow, etc.) and pigments absorb certain colors of light in order to power photosynthesis. Briefly explain what color of light you think is least useful for plants to use during photosynthesis. 10. Complete the following table regarding the light reactions and Calvin cycle. 11. Plants release oxygen gas as a by-product of photosynthesis. From what molecule is the oxygen gas produced during this process? 12. The two high-energy products of the light reactions include and , which are used to produce sugar in the . 13. The Calvin cycle uses ATP + produced during the reactions to make from in the air.
Shaiju T.
EFFECT OF LIGHT ON RATE OF PHOTOSYNTHESIS TABLE 6.2: OXYGEN PRODUCTION AT 40 CM DISTANCE Minutes → 0 5 10 15 20 Elodea (ml) 0.2 0.21 0.23 0.25 0.27 Control (ml) 0.2 0.2 0.2 0.21 0.21 Elodea - Control (graphing data) 0 0.01 0.03 0.04 0.06 TABLE 6.3: OXYGEN PRODUCTION READING AT 25 CM DISTANCE Minutes → 0 5 10 15 20 Elodea (ml) Control (ml) Elodea - Control (graphing data) Using the above experimental data and graph provided in the Lab 6 PowerPoint on Canvas, answer the following questions: 5. At the end of the 20-minute experiment, what two gasses are present in the tube containing Elodea? 6. If the light intensity experiment had been conducted with only the tube containing the plant, the second tube (without plant) not included, would this experiment be valid? Why or why not? Explain. 7. Based on the data above, how does light intensity or distance from light source affect rate of oxygen production? 8. Photosynthesis involves two distinct processes: The Light Reactions are said to be light-dependent, while the Calvin cycle is said to be light-independent. a. What is/are the primary product(s) of the light-dependent reaction (Light reactions)? b. What is/are the primary product(s) of the light-independent reaction (Calvin cycle)? c. In which of the above reactions is water split to produce oxygen?
Suman K.
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