describe the transfer of light energy to chemical energy in ATP during photosynthesis.?

Question

its a A-Level biology question

Answer 1

ok so packets of sunlight are called PHOTONS and those PHOTONS are absorbed in PHOTOSYSTEM 2 (PS2) which are proteins on the membrane of cytoplasm cells on plants (or any photosynthetic organisim)

follow so far? ok here is where it complicated...

ok so little electrons are floating around in PS2 and when the light comes in it energizes them and they zoom across into PS 1. and are now PHOTON ELECTRONS.

meanwhile....

water (h2o) is also being absorbed and the electrons are splitting them apart so it is just an h and an o. so the o goes away somewhere and the h floats into the PROTEIN SYNTHASE which is also a protein in the membrane of cytoplasm. it is shaped like a tube. when hydrogen goes in, it spins and produces ATP.

BUT...

remember the PHOTON ELECTRONS?? they left PS1 and now float arond inside the cytplasm. a PHOTON ELECTRON , NADP+ molecule and ATP combine to form NADPH AND ATP.


THE END!!

Answer 2

1. D) They use solar energy 2. A) ATP 3. D) chemical energy to produce ATP. 4. A) energy is released from an ATP molecule for cellular processes. 5. C) chemosynthesis. 6. D) Chloroplasts absorb sunlight and store chemical energy. 7. D) an organism that makes its own source of chemical energy. 8. A) the main light-absorbing molecules found in plant leaves. 9. B) light-dependent reactions of photosynthesis 10. A) carbon dioxide. 11. B) Energy is lost 12. D) hydrogen ions 13. C) the electron transport chain in photosynthesis. 14. A) the light-independent reactions of photosynthesis. 15. C) energy, ATP 16. D) All of these 17. D) light is present 18. D) glucose 19. B) CO2 20. D) energy 21. C) Carbon-based molecules from food and oxygen are used to make ATP 22. D) Pyruvate, NADH 23. C) the Krebs cycle 24. A) the Krebs cycle, hydrogen [correct] 25. B) Oxygen

Answer 3

I would recommend reading this excert http://www.mansfield.ohio-state.edu/~sabedon/biol1105.htm#photosynthesis;
you'll get the clue how it all works in few simple sentences. More you can find at http://www.life.uiuc.edu/crofts/bioph354/lect20.html
its introduction to photosynthesis - nicely written