All cells require energy to carry on life processes. The energy comes from chemical bonds stored in the organism’s food. The cell must release the energy by breaking these chemical bonds. When the bonds are broken, heat is released as a by-product, which is how we maintain our body temperature. The process of breaking chemical bonds in food to release heat and energy is called cellular respiration.
The energy released during respiration is transferred to a new molecule called ATP (adenosine triphosphate). The molecule is composed of 1 adenine, 1 ribose, and 3 phosphate molecules, refer to Figure 6.2, page 109. ATP can be sent through out the cell to the areas that require energy. The bonds between the phosphate groups contain the energy, thus they are called high-energy bonds. The last bond has the most energy in it. When the third phosphate in ATP is removed and bonded elsewhere, the chemical energy is released and used for the cell’s life processes. The remaining molecule composed of 2 phosphates, 1 ribose, and 1 adenine is called ADP, adenosine diphosphate.
2006-09-05 11:29:55
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answer #1
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answered by jennifermlayne 2
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ATP, or adenazine triphosphate, is a complex molecule usesd to store energy. When a cell breaks down glucose (or another sugar) it converts the energy into ATP.
2006-09-05 10:25:15
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answer #2
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answered by Terras 5
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It is the basic unit of chemical energy in a cell.
2006-09-05 10:24:54
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answer #3
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answered by speakeasy 6
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coz it is the only source of energy that can be utilized by the cells the bond in phosphate group is a high energy one and so it gives our cells the required energy according to this equation:
ATP---------> ADP +Energy
2006-09-09 09:33:43
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answer #4
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answered by rebellious_spirit 1
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For energy.
2006-09-05 12:24:36
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answer #5
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answered by moosa 5
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