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what molecule adds a phosphate group to ADP to make atp? (1), What groups of molecules are involved in photosynthesis? (2), In which stage of photosynthesis does electrons transport begin? In which stage is sunlight needed? (3) What is the main product of the Calvin Cycle? (4) What are the reactants of photosynthesis? What are the products? (5)

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Here are the answers to your questions about ATP synthesis and photosynthesis:

  1. What molecule adds a phosphate group to ADP to make ATP?

    • The molecule that adds a phosphate group to ADP (adenosine diphosphate) to form ATP (adenosine triphosphate) is called ATP synthase. This process occurs during oxidative phosphorylation in cellular respiration or during photophosphorylation in photosynthesis.

  2. What groups of molecules are involved in photosynthesis?

    • The main groups of molecules involved in photosynthesis are:
      • Pigments (such as chlorophyll and carotenoids) that capture light energy.
      • Water (H2O), which is split to provide electrons.
      • Carbon dioxide (CO2), which serves as a carbon source.
      • NADP+ and NADPH (electron carriers) that play roles in transferring electrons.
      • ATP, which provides energy for reactions.

  3. In which stage of photosynthesis does electron transport begin? In which stage is sunlight needed?

    • Electron transport begins in the light-dependent reactions (or photochemical phase) of photosynthesis.
    • Sunlight is also required in the light-dependent reactions to energize the electrons and facilitate their transport.

  4. What is the main product of the Calvin Cycle?

    • The main product of the Calvin Cycle is glucose (C6H12O6), though in the immediate steps of the cycle, a 3-carbon molecule called glyceraldehyde-3-phosphate (G3P) is produced, which can be converted into glucose and other carbohydrates.

  5. What are the reactants of photosynthesis? What are the products?

    • The reactants of photosynthesis are:
      • Carbon dioxide (CO2)
      • Water (H2O)
      • Sunlight energy (not a molecule, but necessary)
    • The products of photosynthesis are:
      • Glucose (C6H12O6)
      • Oxygen (O2)

If you have any more questions or need further clarification, feel free to ask!