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Role of ATP and NAD

Role of ATP and NAD

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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 - PowerPoint PPT Presentation

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Page 1: Role of ATP and NAD

Role of ATP and NAD

Page 2: Role of ATP and NAD

Energy Carriers

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

Page 3: Role of ATP and NAD

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

Page 4: Role of ATP and NAD

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

Page 5: Role of ATP and NAD

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

Page 6: Role of ATP and NAD

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?

Page 7: Role of ATP and NAD

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

Page 8: Role of ATP and NAD

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

Page 9: Role of ATP and NAD

•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

Page 10: Role of ATP and NAD

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?

Page 11: Role of ATP and NAD

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