The fatty acids below can be esterified to a glycerol molecule to form glycerophospholipids that, in turn, could aggregate to form a lipid bilayer. Arrange the fatty acids starting from which fatty acid will produce theleast rigid bilayer going to the fatty acid that will produce the most rigid bilayer.• 14:0• 12:0• 22:0• 18:0O 12:0 < 18:0 < 14:0 < 22:0O 14:0 < 12:0 < 22:0 < 18:0O 22:0 < 18:0 < 14:0 < 12:0O 12:0 < 14:0 < 18:0 < 22:0

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Answered: he fatty acids below can be esterified…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Cholesterol maintains the fluidity and stability of membranes at different temperatures. Cholesterol, therefore, ensures that the lipid bilayer Is always packed firmly Always has sugar molecules Is always moving Is destroyed
Which of these general statements is TRUE about the lipid called phosphatidylcholine (or PC)? Group of answer choices PC is NOT an aminophospholipid. PC is zwitterionic at normal cell pH. PC resides mainly in the outer leaflet of the membrane bilayer. 3 of these 4 responses are correct PC is a type of cholesterol.
1.
2
Cholesterol is an integral part of plasma membranes. Based on its structure and characteristics, where is it found in the membrane? O on the extracellular surface Owithin the tail portion of the bilayer O attached to the intracellular surface O embedded with the phospholipid heads Previous Page Page 3 of 7
6. As a demonstration, an artificial cell consisting of an aqueous solution enclosed in a semi permeable membrane is placed into a beaker containing a different solution. The membrane is permeable to water and to monosaccharide's glucose and fructose but completely impermeable to the disaccharide sucrose. The concentration of each cell is described in the diagram below. 0.03M Sucrose 0.02M Glucose 0.01M Sucrose 0.01M Glucose 0.01M Fructose a. Which solute(s) will exhibit a net diffusion into the cell? Explain. b. Which solute(s) will exhibit a net diffusion out of the cell? Explain. C. Which solution is hypertonic, the cell or the solution? Explain.
Which of the following solutions is isotonic relative to a solution of 1.0 M glucose? 1.0 M glucose + 1.0 M fructose O 0.5 M Na+ + 0.5 M CI- O2.0 M glycerol
None
Which of the following might be a feature(s) of a lipid that has been converted from a fully saturated fatty acid to a fatty acid containing several trans double bonds? Select all that apply. The trans fatty acid will now have a higher melting temperature compared to the fully saturated precursor The trans fatty acid will be able to pack more closely with saturated fatty acids, than with unsaturated fatty acids containing cis double bonds The trans fatty acid will now have a lower melting temperature compared to the fully saturated precursor The trans fatty acid will be able to pack most closely with unsaturated fatty acids containing cis double bonds, than with saturated fatty acids
Membranes with unsaturated fatty acids in their components are more flexible and fluid because: Unsaturated fatty acids pack closely together to form ordered arrays. Saturated fatty acids have a "kink" that produces more fluid aggregates. Unsaturated fatty acids have cis double bonds that prevent formation of the "kink." Unsaturated fatty acids bend at the double bond preventing close packing.
1. Draw 8 phospholipid molecules arranged to show how the phospholipids will orient themselves on the surface of the water. This should be a single layer or monolayer. Label the hydrophilic and hydrophobic parts of a phospholipid. 2. Now draw 8 phospholipids, arranged so that they are submerged in the water while still maintaining the correct hydrophobic and hydrophilic interactions. This structure is called a micelle. 3) Draw a structure that is both submerged in water and contains water on the inside. Draw phospholipids oriented to form a cell membrane, with the tails in and the hydrophilic heads out.
In most cells, the lipid molecules that form the cell membrane bond to one another to form a firm, impermeable sheet. True or Flase

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