A. What should happen to the O2 levels in a closed container containing a plant during the day? why?  B. And what happens to the O2 levels during the night (no light)? Why?

Please help with this practice question. I am not sure what the answer is. I believe it would be NAD+ and NADH production, but I am not sure.

Q16. Electron flow along an electron transport chain is a spontaneous process from molecules that are strong reducing agents to molecules that are stronger oxidizing agents. Given your knowledge of photosynthetic electron transport, which one of the following molecules is the strongest reducing agent (most easily oxidized)? A. P680 B. H2O C. P700* D. NADPH

Pls help ASAP.

Just provide brief answer. No need to explain. Understand the direction carefully.

c) . solar photons. Describe two ways through which Photosystem I and Photosystem II optimize the capture of d) good oxidant and a good reductant at the same time. With a simple frontier orbital diagram, explain why the photo-excited P680 pigment is both a

385 Answer all the questions below please! Required: At least 3-4 sentences for each answer Write answers in your own words (don't copy the answer directly) Choose one of the questions below to write a follow-up question!! Energy Conversion by PSI and PSII Q2.1-Explain why 8 photons need to be absorbed just to move 4 electrons through the photosynthetic electron transport system. Photophosphoryation and the Calvin Cycle Q2.2- What happens to the net glyceraldehyde-3P produced by the Calvin Cycle in the chloroplast stroma and why is this important to plant survival? C4 and CAM Pathways Reduce Photorespiration Q2.3- Why is photorespiration considered wasteful, and how do Saguaro and Sugarcane plants reduce this waste under conditions of high temperatures?

What products of

please draw!!! Start with a photon of sunlight and a carbon atom in a molecule of carbon dioxide in the atmosphere: model/diagram their pathway from that starting point to their final destination as a glucose molecule that is used for energy in a cell in the plant root. Following your diagram/model, provide a written explanation for what your diagram/model depicts. Make sure both your model and explanation are clear, concise, and have the appropriate level of detail to clearly demonstrate you understand photosynthesis, cellular respiration, and the movement of mass and energy in plants. PLEASE INCLUDE , how does energy end up in the plant stem?

Please help, thanks!