1. In the experiment known as \"the Gauss Gun\", a metal sphere (0) is allowed t
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Question
1. In the experiment known as "the Gauss Gun", a metal sphere (0) is allowed to roll very slowly towards three other metal spheres attracted to a strong cylindrical magnet as shown in the figure at the right. Watch it at the YouTube video.
The reaction is described as arising from breaking a phosphate bond in ATP that is often described as a high energy bond. The reaction also forms an OH-P bond to create Pi. Just consider this reaction in isolation.
Which of the following statements would you therefore expect are true about the reaction?
It takes a lot of energy to break the O-P bond in ATP.
It only takes a little energy to break the O-P bond in ATP.
The breaking of the O-P bond releases energy that is stored in the bond.
The OH-P bond that is formed in the reaction is a weak bond.
The OH-P bond that is formed in the reaction is a strong bond.
The formation of the OH-P bond is the part of the reaction responsible for releasing energy.
3. To what extent do you think that the macroscopic reaction in 1 is a useful model of how to think about the nanoscopic molecular reaction in 2?
1. In the experiment known as "the Gauss Gun", a metal sphere (0) is allowed to roll very slowly towards three other metal spheres attracted to a strong cylindrical magnet as shown in the figure at the right. Watch it at the YouTube video.
3 2X1 steel spheres strong magneExplanation / Answer
1. a) It takes little energy to break the M-3 bond.
b) The M-O bond that is formed in the reaction is weak bond.
c) The formation of M-O bond is the part of the reaction responsible for providing energy to 3.
2. a) Formation of OH-P bond is the part of the reaction responsible for releasing energy. It takes a little energy to break the O-P bond in ATP. The OH-P bond that is formed in the reaction is a weak bond.
b) Inorganic phosphate and phosphate groups on ATP are weak acids.
c) The bonds between iP and phosphate groups are relatively weak. Bond formation involves high energy electrons but bonds are quite easy to break.
d) High negative charge density associated with three adjacent phosphate units of ATP also stabilize the molecule making it high in energy.
e) The pK values depnds upon pH of the reaction medium. Hydrolysis of ATP relieves some electrostatic repulsions liberating H+ in energy releasing process that changes in pK values.
f) The main effect of this pK values is H+ is released on ATP hydrolysis
3. a) The ball 'O' represented with water molecule.
b) Magnet, ball 3 heads represents ATP moleculs.
c) When the ball 'O' hits up magnet, ball 3, leads to energing producing reaction.
d) Ball 'O' and magnet with ball 3 heads shows macroscopic reaction whereas water and ATP molecular reaction shows nanoscopic molecular reaction.
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