ATP

explanation of how ATP is made the reactions involved and the uses of ATP in organisms.

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  • Created on: 24-09-12 09:54
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The Importance of ATP
ATP which stands for Adenosine Triphosphate is a nucleotide that contains a high amount of
energy stored in its phosphate bonds. When the bonds are broken during hydrolysis it
releases its energy. This is an important part of many metabolic processes that require
energy.
ATP is made up of adenine, a ribose sugar and three phosphate groups.
ADP + Pi ATP
ATP ADP + Pi
How is ATP Formed
Plants
During photosynthesis there are light dependent reactions. These reactions occur in the
chloroplast. Light which the chlorophyll absorbs provides the energy needed to convert ADP
into ATP. This process is called photophosphorylation.
6CO2 + 12H20 C6H1206 + 602 + H20
Aerobic Respiration
Glucose + oxygen Carbon dioxide + Water
This equation shows how molecules containing a high amount of energy are broken down to
create smaller molecules. This process releases energy which is used to synthesize ATP from
ADP. This process uses oxygen and can produce large amounts of ATP.

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Uses of ATP
Muscle contraction
Creatine phosphate + ADP + H+ Creatine + ATP
Muscles only contain a small percentage of ATP which is only enough to sustain a few
movements. So to overcome this problem our muscles contain a substance called creatine
phosphate, which transfers its phosphate group to ADP to form ATP. The ATP is then used
by the Myosin's to move along the actin filaments which are part of the muscle fibres.…read more

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