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Photosynthesis Respiration Short.pptx

Photosynthesis Respiration Short.pptx - Photosynthesis...

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Photosynthesis & Respiration
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Opening Questions : What is ENERGY? How do you make it through your day? How does a plant eat? What powers a car?
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Conservation of energy Energy can be converted but cannot be created or destroyed.
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Energy FLOWS through ecosystems Solar energy is inputted daily. Energy therefore flows through living systems. Life on Earth is powered by the sun.
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Energy used to power cells There are many different types of molecules which contain energy-rich bonds However, nearly all of a cell’s energy needs are met by the breakdown of one molecule, ATP
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ATP ATP – Adenosine Triphosphate - Adenine, a nucleotide found in DNA and RNA. Contains three phosphate groups connected to each other in sequence The bonds can be broken and release energy When the terminal phosphate bond is broken, a molecule of inorganic phosphate (P i ) and a molecule of adenosine diphosphate are formed ATP -> ADP + (P i ) This generates free energy, which can be used by the cell to do work
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Plants capture solar energy and convert it to chemical energy (sugars) Energy is stored
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