4._EnergeticsPost - Peer Pods: Cell Energetics ACTIVITY 1:...

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Peer Pods: Cell Energetics ACTIVITY 1: ORDER IS IMPORTANT (10 MIN.) Your TA will pass around a beaker holding slips of paper. Each slip describes one step of photosynthesis. Your job as a pod is to arrange these steps to reflect the order in which they occur. Once you have correctly completed this task, identify in which part of the cell each step occurs. Here are the steps in the correct order. The location of each step follows in parentheses. Light absorbed by chlorophyll pigments. (Thylakoid membrane of grana) Chlorophyll pigments of photosystem II absorb light (photon) energy and lose two excited electrons. (Thylakoid membrane of grana) Excited electrons move through chain of protein electron acceptors to photosystem I to replace lost electrons. ATP is synthesized from H + gradient created by flow of electrons down protein chain. (Thylakoid membrane of grana) Chlorophyll at photosystem I absorbs light (photon) energy that are used to reduce NADP + → NADPH. (Stroma of the chloroplast) ATP and NADPH carry energy and reducing power to the Calvin Cycle to “power” the fixation of carbon. (Stroma of the chloroplast) The carbon fixation phase of the Calvin cycle in which CO 2 is bound to a five carbon sugar (RuBP) which is immediately split into two molecules of PGA (phosphoglyceraldehyde). This phase is controlled by Rubisco. (Stroma) The reduction phase of the Calvin cycle in which NADPH reduces PGA to G3P (Glyceraldehyde 3-phosphate). (Stroma) The regeneration of RuBP and return to the beginning of the cycle. (Stroma) Harvest of G3P which is used to build glucose in the cytoplasm. (Stroma)
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ACTIVITY 2: LOTS OF DETAILS, WHICH ONES ARE IMPORTANT? Making tables is a good technique for organizing information so that you can compare and contrast. Starting with the pod member whose name begins with or closest to “a” and moving clockwise around the pod, complete the table. Use the book and your notes to make sure the information is correct, and make sure you copy all this correct information into your notes. GLUCOSE OXIDATION (Aerobic conditions)
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4._EnergeticsPost - Peer Pods: Cell Energetics ACTIVITY 1:...

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