Healty fats. Phospholipids are major components of the plasma membranes of anima

Question

Healty fats. Phospholipids are major components of the plasma membranes of animal cells Draw te structure of Phosphatidylcholine containing two fatty acids linolenate and arachidonate Which fatty acid is a m-3 fatty acid? What is the net charge on this phospholipid? Do some further reading about the healthy effects of linolcnatc and arachidonaic (again referring t. reliable Internet sources). Write a short summary (-200 words) about each of these fatty acids Thermodynamics of Metabolism. Which of the following reactions is favorable under standard-state conditions (l M reactants and products; pH = 7)? Calculate the value of Delta G degree for each phosphate transfer reaction ATP + pyruvate pyruvate rightarrow phosphoenolpyruvate + A DP 3-phosphoglyccratc + ATP rightarrow 1,3-bisphosphoglyccratc + ADP 1,3-bisphosphoglyccrate + creatine rightarrow creatine phosphate + 3-phosphoglyccrate glucose 6-phosphatc righhtarrow glucose I -phosphate ATP synthesis in neurons. Calculate the actual, physiological Delta G for the reaction Phosphocrcatinc + ADP rightarrow creatine + ATP at 37 degree C. as it occurs in the cytosol of neurons. The physiological concentrations are 4.7 mM phosphocrcatinc. 1.0 mM creatine. 0.73 mM ADP. and 2.6 mM ATP.

Explanation / Answer

4) phosphocreatine + ATP -----------> creatine + ADP

K = [creatine] [ADP]/[ phosphocreatine][ATP]

    = [1.0 mM] [2.6 mM]/ [4.7 mM] [0.73 mM]

     = 0.7578

K = 0.7578

G = -RT InK

      = - 8.314 J/K/molx 298 K x In (0.7578)

       = + 687.1 J/mol

Therefore,

G = + 687.1 J/mol

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