CHAPTER 9: SECTION ONE. PHOTOSYNTHESIS & CELLULAR RESPIRATION. ENERGY IN LIVING THINGS. What type of energy is used in cells, and what is the ultimate source of this energy? How is an organism’s metabolism related to the carbon cycle? How is energy released in a cell? .
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PHOTOSYNTHESIS & CELLULAR RESPIRATION
Our ultimate source of NRG!!
Serve as food for almost all other organisms on Earth.
FUEL FOR THE CELLS!!
How is an organism’s metabolism related to the carbon cycle?
Organisms’ metabolism is part of Earth’s carbon cycle.
Cell’s Energy Currency
HOW IS ENERGY RELEASED IN A CELL?
NADH & NADPH…..HUH??
CHAPTER 9: SECTION TWO
In plants, light energy is harvested by pigments that are located in the thylakoid membrane of chloroplasts.
Photosynthesis is the process that provides energy for almost all life. Chloroplasts are the organelles that convert light energy into chemical energy.
What are the roles of the electron transport chains?
Step 5: Excited electrons combine with H+ ions and NADP+ to form NADPH
NADPH is an electron carrier that provides high-energy electrons needed to store energy in organic molecules.
How do plants make sugars and store extra unused energy?
What are the three environmental factors that affect photosynthesis?