Melting Point of Acid; Structures of Compounds; Triglycerol; Bacteria; Membrane Lipids

1. Does trans-oleic acid have a higher or lower melting point than cis-oleic acid?explain in detail why? 2. Draw the structure of 1-palmitoyl-2-oleoyl-3-phospatidylserine. 3.why can't triglycerols(fats) be significant components of membranes? 4. when bacteria growing at 20 degree celsius are warned to 30 degree celsius,are they more likely to synthesize membrane lipids with a. saturated or unsaturated fatty acids?and explain why? b. short-chain or long chain fatty acids?and explain why?

Synthesis of ATP; Reaction Catalyzed; Equilibrium Constant; Standard Free Energy Change

1. Phosphocreatine can be used as a phosphoryl donor for the synthesis of ATP in a reaction catalyzed by creatine kinase. Refer to the Table {see attachment} for "free energies of hydrolysis of ATP and creatine Kinase." (Show all the calculations) a. what effect does creatine kinase have on the value of delta G Knot prime for the reaction? b. from the typical concentrations of ATP,ADP,creatine phosphate,and creatine cited in the table for "free energies of hydrolysis of ATP and craetine Kinase", calculate delta G prime for the reaction in a resulting muscle cell at 25 degree celsius and comment the result. c. suppose that during muscle contraction the concentration of creatine phosp... click for more

fatty acid complement in bacterial membrane

A bacterium is in the process of acclimating to a lower temperature environment. How would you expect the fatty acid complement in the bacterial membrane to change in response to the lower temperature? Why?

Phospholipid lateral motion in membrane

Please show me how to work through this problem (just tell me the steps - thanks): Phospholipid lateral motion in a membrane is characterized by a diffusion coefficient (D) of about 1.0 x10-8 cm2/sec. The distance (r) traveled in two dimensions (over the surface of the membrane) in a given time (t) is given by r = (4Dt)½, where r is the distance traveled in cm, D is the diffusion coefficient, and t is the time in seconds during which diffusion occurs. a) Calculate the distance traveled by a phospholipid across a bilayer in 10 milliseconds (ms). Protein lateral motion is much slower than that of lipids because proteins are much larger than lipids. Also, some membrane proteins ca... click for more

vitamin A 0.05% gel

I am trying to find out which chemical form of vitamin A is used in pharmaceutical gels. vitamin A 0.05% gel for Pharmacutical 1) vitamin A 2) vitamin A Aldehyde 3) 9-cis-Retinoic Acid 4) 13-cis-Retinoic Acid