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Briefly explain the light-dependent reactions of photosynthesis: where does this take place, what are the reactants and what is produced?
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- Melvin Calvin and Andrew Benson determined the steps in the light-independent reactions of photosynthesis by exposing the green alga Chlorella to CO2 labeled with the radioisotope carbon 14. By looking at which compounds the C14 ended up in, they were able to identify all intermediates in this cyclic pathway. Why did they predict correctly that the same set of intermediates would be formed in the light reaction in land plants?Provide an overview of photosynthesis by describing the purpose of the light and dark reactions. How do the light and dark reaction contribute to photosynthesis? Describe the products and by products of the light reactions and the general concept of the system. What part of the system does the DCPIP substitute?In photosynthesis, contrast the light reactions with the light independent reactions, in terms of goals, inputs, and outputs of each. Spatially where do they take place (which parts of the chloroplast)? (Optional, for further discussion: Could there be light reactions without light-independent reactions, or visa-versa?)
- AsapIn photosynthesis, contrast the light reactions with the light independent reactions, in terms of goals, inputs, and outputs of each. Spatially where do they take place (which parts of the chloroplast)?1. A) For the schematic of a chloroplast shown in the image attached, match the major input and output molecules of photosynthesis to the letters shown. Molecules: CO2, H2O, O2, sugar A: B: C: D: B) In the image attached, the light reactions are shown to take place in the thylakoid. Where specifically do these reactions take place? C) Where does the Calvin cycle take place?
- What are the two places where light energy is required in the light reaction of photosynthesis? Why must energy be supplied at precisely these points?Describe the purpose of the light dependent reaction and light independent reaction (carbon fixation reaction) in photosynthesis. In addition, explain how the products of the light dependent reaction are used in the light independent reaction (carbon fixation reaction)For the following questions, choose one to discuss: chloroplast/photosynthesis State at the outset which one you will discuss. A) What role do proton gradients play in the process of photosynthesis proton gradients allow B) Where are proton gradients formed? Within what structures are they seen in chloroplasts How do the structures help them to maintain a gradient? C) Explain where and how the chloroplast or mitochondria uses passive transport and active transport to complete photosynthesis or cellular respiration.
- In photosynthesis, what is encompassed by the term “light reactions”?You will create a slide show/ Canva/ Website on the flow chart of photosynthesis phases .Your poster should include, but is not limited to:○ The overall equation is at the top.○ A diagram of a chloroplast which indicates where each reactant is used and whereeach product is synthesized. ○ All intermediary steps were studied in the light-dependent reactions and light-independent reactions, in the form of a flow chart(try to add details around them), using appropriate terminology. ● You will also submit a detailed explanation of your flow chart, using appropriateterminology.Which of the following is NOT true of photosynthesis? O The light-independent ("dark") reaction makes glucose from carbon dioxide (CO₂) and water, using energy trapped by the light-dependent reaction The light-dependent reaction captures electrons in NADPH, which are used for glucose synthesis in the light-independent ("dark") reaction None of the other four answers (all are true of photosynthesis) Light-excited electrons in chlorophyll provide the energy for ATP production The light-independent ("dark") reaction converts light energy to chemical energy stored in ATP