Question

21. Answer the following questions about fatty acids: a) Draw the structure of linoleic acid. (3 points) b) What is the T. of a membrane bilayer composed only of linoleate, relative to a bilayer composed only of stearate? Explain your answer in one sentence. (2 points) c) What are the standard IUPAC, short-hand IUPAC and short-hand omega names for the following fatty acid? (7 points) IUPAC: H H Н. Short-hand IUPAC: CH H OH Short-hand Omega: 22. In the citric acid cycle, malate is oxidized into oxaloacetate: (4 points) Malate + NAD + Oxaloacetate + NADH Keq at 37°C -6.0 x 10-6 Is this reaction spontaneous in the forward direction under standard biochemical state conditions and 37°C? Calculate AG" to support your answer. AG"

Answer 1

Q.21. (a) The structure of linoleic acid is shown below:

7 n 3 10. 100 2 olt J 11 12. 13 14 115 Lenoleic acid 18 carbon atoms with two cis- double bonds beth 42 & 3 840 16 Cq and 117 1 %