Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
8th Edition
ISBN: 9780134015187
Author: John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher: PEARSON
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Textbook Question
Chapter 23, Problem 23.21UKC
The fatty acid composition of three triacylglycerols (A, B, and C) is reported below. Predict which one has the highest melting point. Which one do you expect to be liquid (oil) at room temperature? Explain.
Expert Solution & Answer
Interpretation Introduction
Interpretation:
The triacylglycerols with highest melting point and fatty acid expected to be liquid at room temperature has to be identified.
Concept Introduction:
Triacylglycerol:
It is also known as triglyceride, an ester composed of glycerol and long chains of acyl fatty acids.
Explanation of Solution
The fatty acid composition A has the highest melting point and B and C are expected to be at low melting point.
Since the composition A contains
Conclusion
The triacylglycerols with highest melting point and fatty acid expected to be liquid at room temperature was identified.
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Students have asked these similar questions
The table provides the standard reduction potential, E', for relevant half-cell reactions.
Half-reaction
E'° (V)
Oxaloacetate² + 2H+ + 2e malate²-
-0.166
Pyruvate + 2H+ + 2e → lactate
-0.185
Acetaldehyde + 2H+ + 2e¯ →→→ ethanol
-0.197
NAD+ + H+ + 2e--> NADH
-0.320
NADP+ + H+ + 2e →→ NADPH
Acetoacetate + 2H+ + 2e¯
-
-0.324
B-hydroxybutyrate
-0.346
Which of the reactions listed would proceed in the direction shown, under standard conditions, in the presence of the
appropriate enzymes?
Malate + NAD+ oxaloacetate + NADH + H+
Malate + pyruvate oxaloacetate + lactate
Pyruvate + NADH + H+ lactate + NAD+
Pyruvate + p-hydroxybutyrate lactate + acetoacetate
Acetaldehyde + succinate ethanol + fumerate
Acetoacetate + NADH + H+ → B-hydroxybutyrate + NAD+
Arrange the four structures in order from most reduced to most oxidized.
Most reduced
R-CH2-CH3
R-CH2-CH₂-OH
R-CH,-CHO
R-CH₂-COO
Most oxidized
for each pair of biomolecules, identify the type of reaction (oxidation-reduction, hydrolysis, isomerization, group transfer, or
nternal rearrangement) required to convert the first molecule to the second. In each case, indicate the general type of enzyme
and cofactor(s) c reactants required, and any other products that would result.
R-CH-CH-CH-C-S-COA
A(n)
A(n)
A(n)
A(n)
Palmitoyl-CoA
R-CH-CH=CH-C-S-CoA
°
trans-A-Enoyl-CoA
reaction converts palmitoyl-CoA to trans-A2-enoyl-CoA. This reaction requires
and also produces
Coo
HN-C-H
CH₂
CH₂
CH
CH
CH, CH,
L-Leucine
CH, CH,
D-Leucine
8/6881
COO
HÌNH:
reaction converts L-leucine to D-leucine. This reaction is catalyzed by a(n)
H-C-OH
H-C-OH
C=0
HO-C-H
HO-C-H
H-C-OH
H-C-OH
H-C-OH
CH,OH
Glucose
H-C-OH
CH,OH
Fructose
OH OH OH
CH-C-CH₂
reaction converts glucose to fructose. This reaction is catalyzed by a(n)
OH
OH OPO
I
CH-C-CH
H
Glycerol
Glycerol 3-phosphate
H
reaction converts glycerol to glycerol 3-phosphate. This reaction requires
H,N-
H,N
H…
Chapter 23 Solutions
Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
Ch. 23.1 - Use Figure 23.1 to identify the family of lipids...Ch. 23.2 - Prob. 23.2PCh. 23.2 - Prob. 23.3PCh. 23.2 - Prob. 23.4KCPCh. 23.3 - Prob. 23.1CIAPCh. 23.3 - Prob. 23.2CIAPCh. 23.3 - Prob. 23.3CIAPCh. 23.3 - Prob. 23.5PCh. 23.3 - Prob. 23.6PCh. 23.3 - Prob. 23.7KCP
Ch. 23.4 - Prob. 23.8PCh. 23.4 - Prob. 23.9PCh. 23.4 - Prob. 23.10PCh. 23.4 - Prob. 23.11PCh. 23.5 - Prob. 23.12PCh. 23.5 - Draw the structure of the sphingomyelin that...Ch. 23.5 - Draw the structure of the glycerophospholipid that...Ch. 23.5 - Prob. 23.16PCh. 23.7 - Prob. 23.17KCPCh. 23.7 - Prob. 23.4CIAPCh. 23.7 - Prob. 23.6CIAPCh. 23.7 - Prob. 23.7CIAPCh. 23.7 - Prob. 23.8CIAPCh. 23.7 - Prob. 23.18PCh. 23.7 - Prob. 23.19PCh. 23.7 - Prob. 23.20KCPCh. 23 - The fatty acid composition of three...Ch. 23 - Prob. 23.23UKCCh. 23 - According to the fluid-mosaic model (Figure 23.7),...Ch. 23 - Dipalmitoylphosphatidylcholine (DPPC) is a...Ch. 23 - Prob. 23.26APCh. 23 - Prob. 23.27APCh. 23 - Prob. 23.28APCh. 23 - Prob. 23.29APCh. 23 - Differentiate between saturated, monounsaturated,...Ch. 23 - Are the carboncarbon double bonds in naturally...Ch. 23 - Prob. 23.32APCh. 23 - Prob. 23.33APCh. 23 - Which of these fatty acids has the lower melting...Ch. 23 - Which of these fatty acids has the higher melting...Ch. 23 - Prob. 23.36APCh. 23 - Prob. 23.37APCh. 23 - Prob. 23.38APCh. 23 - Prob. 23.39APCh. 23 - What function does a wax serve in a plant or...Ch. 23 - Prob. 23.41APCh. 23 - Prob. 23.42APCh. 23 - What kind of lipid is spermacetia fat, a wax, or a...Ch. 23 - Prob. 23.44APCh. 23 - Prob. 23.45APCh. 23 - Prob. 23.46APCh. 23 - Prob. 23.47APCh. 23 - Prob. 23.48APCh. 23 - Prob. 23.50APCh. 23 - Prob. 23.52APCh. 23 - Prob. 23.53APCh. 23 - Describe the difference between a triacylglycerol...Ch. 23 - Why are glycerophospholipids, rather than...Ch. 23 - Prob. 23.56APCh. 23 - Prob. 23.57APCh. 23 - Why are glycerophospholipids more soluble in water...Ch. 23 - Prob. 23.59APCh. 23 - Prob. 23.60APCh. 23 - Prob. 23.61APCh. 23 - Draw the structure of a glycerophospholipid that...Ch. 23 - Prob. 23.63APCh. 23 - What is a major function of cholesterol in your...Ch. 23 - Prob. 23.65APCh. 23 - Prob. 23.66APCh. 23 - Prob. 23.67APCh. 23 - Explain how a micelle differs from a membrane...Ch. 23 - Prob. 23.69APCh. 23 - Prob. 23.70APCh. 23 - Prob. 23.71APCh. 23 - Prob. 23.72APCh. 23 - Prob. 23.73APCh. 23 - Prob. 23.74APCh. 23 - Prob. 23.75APCh. 23 - Draw the structure of a triacylglycerol made from...Ch. 23 - Prob. 23.79CPCh. 23 - Prob. 23.80CPCh. 23 - Explain why cholesterol is not saponifiable.Ch. 23 - Draw cholesterol acetate. Is this molecule...Ch. 23 - Prob. 23.83CPCh. 23 - Prob. 23.84CPCh. 23 - Prob. 23.85CPCh. 23 - Prob. 23.86CPCh. 23 - Prob. 23.88GP
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