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Role of ATP and NAD

Role of ATP and NAD. Energy Carriers. ATP , NADP+ and NAD+ play a vital role in trapping and transferring energy in cellular activities. ADP and ATP. ADP is an abbreviation for Adenosine Diphosphate this is a molecule found in the cells of all organisms

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Role of ATP and NAD

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  1. Role of ATP and NAD

  2. Energy Carriers • ATP , NADP+ and NAD+ play a vital role in trapping and transferring energy in cellular activities

  3. ADP and ATP • ADP is an abbreviation for Adenosine Diphosphate this is a molecule found in the cells of all organisms • It is made of the base adenine , a 5 carbon sugar called ribose and 2 phosphate groups • ADP is a low energy molecule

  4. ADP and ATP • If another phosphate is added to ADP it forms ATP (Adenosine Triphosphate) • Extra energy is also added as there is an extra bond between the last two phosphate groups • Addition of a phosphate like this is called Phosphorylation • ATP is rich in energy and stores this energy carrying it around in the cell

  5. ADP and ATP • ATP cannot store energy for very long it breaks down releasing energy and converting back to ADP • Most cells release energy from ATP 10 million times every second! This energy is used for cellular reactions

  6. Learning Check • What do ADP and ATP stand for? • What base is found in ATP and ADP? • What sugar is found in ATP and ADP? • Which is a higher energy molecule? • How does ADP become ATP? • This process is called p.................................. • How is the energy in ATP released?

  7. NADP+ and NADPH • NADP+ is a low energy molecule involved in photosynthesis • NADP+ can combine with 2 high energy electrons and a proton to form NADPH • NADPH is a very high energy molecule • It’s energy is used to form glucose in photosynthesis

  8. NADP+ and NAD • NAD+ is used in respiration • It can combine with 2 high energy electrons and a proton to form NADH which is very high in energy • Remember P for photosynthesis, NADP+ is used in photosynthesis NAD+ in respiration

  9. Both NADH and NADPH release energy and protons when they break down into NAD+ and NADP+ • These electrons, protons and energy are used by cells

  10. Learning Check • Is NADP+ used in photosynthesis or respiration? • What combines with NAD+ and NADP+ to form NADH and NADPH? • What do NADH and NADPH provide for reactions in cells? • How do they provide these things?

  11. Syllabus Can You?........ • Explain the role of ATP and describe how it is formed from ADP + P • Explain the role of NADP+ in trapping and transferring electrons and hydrogen ions in cell activities

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