ORGANIC CHEMISTRY W/SSM >CB<
8th Edition
ISBN: 9781323748688
Author: Bruice
Publisher: PEARSON C
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Question
Chapter 25.5, Problem 8P
Interpretation Introduction
Interpretation:
The way in which the bacteria regain their original fluidity has to be given.
Concept Introduction:
Phosphoglycerides form membranes by arranging themselves in a lipid bilayer.
The polar heads of the phosphoglycerides are on both surfaces of the bilayer and fatty acids form the interior of the bilayer.
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A colony of bacteria accustomed to an environment with a temperature of 25 °C was moved to an identical environment, except that its temperature was 35 °C. The higher temperature increased the fluidity of the bacterial membranes. How can the bacteria regain their original membrane fluidity?
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You are given 150 mL of an oil made up of a mixture of 3 fatty acids:
palmitoleic acid (C 16:1 (n-7))
erucic acid (C 22:1 (n-9))
stearidonic acid (C 18:4 (n-3))
You know that the 150 mL sample of this oil was prepared by adding 60 mL of palmitoleic acid to 90 mL of a mixture of erucic acid and stearidonic acid.
Using a hydrometer you carefully measure the density of the 150 mL sample of oil and your analysis indicates that it has a density of 0.900 g/cm3.
The densities of the individual fatty acids are:
palmitoleic acid = 0.894 g/cm3
erucic acid = 0.860 g/cm3
stearidonic acid = 0.9334 g/cm3
Can you determine the volumes (in mL) of erucic acid and stearidonic acid in the total volume (150 mL) of the oil mixture?
Chapter 25 Solutions
ORGANIC CHEMISTRY W/SSM >CB<
Ch. 25.1 - Prob. 1PCh. 25.3 - Which has a higher melting point, glyceryl...Ch. 25.3 - Draw the structure of an optically inactive fat...Ch. 25.3 - Draw the structure of an optically active fat...Ch. 25.5 - Do the identities of R1 and R2 in phosphatidic...Ch. 25.5 - Membranes contain proteins, Integral membrane...Ch. 25.5 - Prob. 8PCh. 25.5 - The membrane phospholipids in deer have a higher...Ch. 25.6 - Treating PGC2 with a strong base such as sodium...Ch. 25.7 - Mark off the isoprene units in menthol, -selinene,...
Ch. 25.7 - Prob. 13PCh. 25.7 - Prob. 14PCh. 25.8 - Propose mechanisms for the Claisen condensation...Ch. 25.8 - Prob. 16PCh. 25.8 - Propose a mechanism for the conversion of...Ch. 25.8 - Propose a mechanism for the biosynthesis of...Ch. 25.8 - Propose a mechanism for the conversion of the E...Ch. 25.8 - The fluoro-substitued geranyl pyrophosphate shown...Ch. 25.8 - Prob. 22PCh. 25.8 - Prob. 23PCh. 25.9 - Draw the individual 1,2-hydride and 1,2-methyl...Ch. 25.10 - Prob. 26PCh. 25.10 - Prob. 27PCh. 25.10 - The acid component of a cholesterol ester is a...Ch. 25.10 - Prob. 29PCh. 25.10 - Prob. 30PCh. 25 - Prob. 31PCh. 25 - An optically active fat, when completely...Ch. 25 - Prob. 33PCh. 25 - a. How many different triacylglycerols are there...Ch. 25 - Cardiolipins are found in heart muscles. Draw the...Ch. 25 - Nutmeg contains a simple, fully saturated...Ch. 25 - Draw the product that is obtained from the...Ch. 25 - Prob. 39PCh. 25 - Prob. 40PCh. 25 - Propose a mechanism for the biosynthesis of...Ch. 25 - 5-Androstene-3.17-dione is isomerized to...Ch. 25 - Prob. 44PCh. 25 - Eudesmol is a sesquiterpene found in eucalyptus....Ch. 25 - Prob. 46PCh. 25 - Prob. 47PCh. 25 - Diethylstilbestrol (DES) was given to pregnant...
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- Starch contains CC, CH, CO, and OH bonds. Hydrocarbons have only CC and CH bonds. Both starch and hydrocarbons can form colloidal dispersions in water. Which dispersion is classified as hydrophobic? Which is hydrophilic? Explain briefly.arrow_forwardWhich term refers to the the diffusion of water molecules through a selectively permeable membrane?Single choice. osmosis engulfing passive transportarrow_forwardWhich aspect of the structure of DNA makes it soluble in water? What are the predominant intermolecular forces between water and DNA?arrow_forward
- consider a 4% starch solution and a 10% starch solution separated by a semipermeable membrane. Which of the following occurs in this system? A. There is a net flow of water from the 4% starch solution into the 10% starch solution. B. There is a net flow of water from the 10% starch solution into the 4% starch solution. C. Water does not cross the membrane at all. D. Water flows equally in both directions. E. Starch moves out of the 10% starch solution into the 4% starch solutionarrow_forwardWhich of the following statements are applicable and which aren’t? A. Diffusion of a solute through a membrane is considerably quicker than diffusion of the same solute through a water layer of equal thickness. b. A single ion, such as K+, can diffuse through more than one type of channel. c. Lipid-soluble solutes diffuse more readily through the phospholipid bilayer of a plasma membrane than do water-soluble ones. d. The rate of facilitated diffusion of a solute is limited by the number of transporters in the membrane at any given time. e. A common example of co-transport is that of an ion and an organic molecule.arrow_forwardHow many grams of sucrose (C12H22O11) would you need for a 2L of a 2M solution?arrow_forward
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