Organic Chemistry (8th Edition)
8th Edition
ISBN: 9780134042282
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Textbook Question
Chapter 25.10, Problem 28P
The acid component of a cholesterol ester is a fatty acid such as linoleic acid. Draw the structure of a cholesterol ester.
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A simple triacylglycerol is one that:
a) Upon hydrolysis produces glycerol and three different fatty acids.
b) Upon hydrolysis produces glycerol and at least two different fatty acids.
c) Upon saponification gives glycerol and three fatty acid salts.
d) Upon saponification gives three esters.
e) Upon hydrolysis produces glycerol and three mol of a fatty acid.
Which is a characteristic of the phospholipids in cell membranes?
Select one:
Phospholipids in a membrane interact with other membrane molecules, in part, through covalent forces
Phospholipids are lipid molecules with a polar head and a non-polar tail, where the interaction of these components with other molecules of itself, results in membrane formation
Increasing the proportion of protein in a membrane increases the amount of membrane symmetry
Increasing the proportion of saturated fatty acids in a membrane increases membrane fluidity
A phospholipid molecule glows in the dark after exposure to visible light
How do the unsaturated fatty acids in phospholipids affect the structure of cell membranes?
Match the words in the left column to the appropriate blanks in the sentences on the right.
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stronger
In the cell membrane, the unsaturated fatty acids contain
that cause the phospholipids
flexible and fluid-like
to
This causes the cell membrane to be
rigid and fixed
double bonds
fit closely together
steroids
proteins
extend through the
membrane
triple bonds
not fit closely together
Chapter 25 Solutions
Organic Chemistry (8th Edition)
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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- Fats belong to the class of organic compounds represented by the general formula, RCOOR', where R and R' represent hydrocarbon groups. What is the name of the functional group present in fats? What functional group is common to all saponifiable lipids?arrow_forwardGive numerical answers to the following questions about the structure of a cholesterol molecule. a. How many six-membered rings arc present? b. How many amide linkages are present? c. How many hydroxyl substituents are present? d. How many total functional groups are present?arrow_forwardWhat is the basis for deciding if a substance is a lipid?arrow_forward
- safflower oil glyceryl tripalmitate (tripalmitin) beeswax sodium stearate cholesterol ty acid soap triacylalycerol wax GPLarrow_forwardWhich description is true regarding beeswax? Question 11 options: Beeswax is formed from a fatty acid and a low molecular weight amide. Beeswax is hydrophobic and insoluble in water. Beeswax is formed from a fatty acid and a high molecular weight alcohol. Beeswax is hydrophilic and soluble in water. Beeswax is formed from a fatty acid and a high molecular weight alcohol. Beeswax is hydrophobic and insoluble in water.arrow_forwardWhat type of bond joins amino acids into proteins? A) glycosidic bond B) hydrogen bond C) ester bond D) amide bondarrow_forward
- Which among the carboxylic salts extends the shell life of bread by preventing the formations of molds? acetate sorbates propionates benzoatearrow_forwardWhat are fatty acids? Draw a general idea of a soap molecule. Label which end is polar and which one is nonpolar. Identify which end is known as being hydrophobic and which end is known as being hydrophilicarrow_forwardWhat are lactones?arrow_forward
- Draw the structure of the phosphate ester bond between Butyric acid and phosphoric acid. What is the name of the reaction that leads to the formation of this phosphate ester bond?arrow_forwardIn which of the following types of lipids are two ester linkages and one amide linkage present? A. Triacylglycerols B. Sphingophospholipids C. Steroids D. Glycerophospholipids E. Sphingoglycolipidsarrow_forwardTriacylglycerides obtained from animal fats and plant oils are typically used in the production of biodiesel. Explain the advantage of using a triacylglyceride as the starting material for biodiesel synthesis over the waxy esters found in Jojoba oil.arrow_forward
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Lipids - Fatty Acids, Triglycerides, Phospholipids, Terpenes, Waxes, Eicosanoids; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=7dmoH5dAvpY;License: Standard YouTube License, CC-BY