Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Question
Chapter 26, Problem 8P
Interpretation Introduction
Interpretation:
The balanced reaction equation involving the glycerol and fatty acidsfor the formation of triacylglycerol should be determined.
Concept introduction:
Lipids are the organic material which is soluble in some organic solvents whereas insoluble in water. These include different types of compounds such as phospholipids, fats, and steroids. These play important functions in a cell. Examples of some common lipids are a vegetable oil, butter, cholesterol, and other steroids, waxes, phospholipids, and fat-soluble vitamins.
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Trans-fatty acids are synthetic forms of fatty acids made from altered unsaturated fatty
acids. Trans-fatty acids are denser, solid at room temperature, and store more energy in
the same unit of volume than unsaturated fatty acids. The production of trans-fatty acids
involves the reorientation of one of the hydrogen atoms attached to a double-bonded car-
bon atom, as illustrated in the figure below.
unsaturated fatty acid
OHHHHH
HOC CCCC-c
II I I
HHHH
trans-fatty acid
||||
Molecular model of an unsaturated and trans-fatty acid
Based on the structures shown above,
H
-C-C-C-C-C-H
HHHHH
TTTTT
!!!!!
HHHHH
OHHHHH
| ! ! ! ! !
HO-C-C-C-C-c-c
IIII
HHHH H HHHHH
H
HH
III
C-C-C-H
I
(a) Identify one property of all fatty acids.
(b) Describe one of the functions of fatty acids in living systems.
(c) Explain how the reorientation of the hydrogen atom as shown in the image allows the trans-
fatty acids to be denser and solid at room temperature.
Respond to each part in 3 to 5 complete sentences.
NH,
This compound is directly involved in:
он
O=P-0-CH,
H
но
OmP-0-
O oxidizing an alcohol in the conversion of sucrose to fructose.
O the synthesis of malonyl coenzyme A.
reducing a ketone in gluconeogenesis.
reducing a C=C double bond in fatty-acid synthesis.
SH
CH2
CH2
NH
This structure plays an important role in the synthesis of
H CH3
C-CH,-CH,-N-C-c-c-CH2-0-
O glycogen from glucose 6-phosphate.
O fatty acids from acetyl coenzyme A
O glucose from pyruvate.
CO glyceraldehyde 3-phosphate from fructose.
O ATP from ADP and inorganic phosphate.
Chapter 26 Solutions
Biochemistry
Ch. 26 - Prob. 1PCh. 26 - Prob. 2PCh. 26 - Prob. 3PCh. 26 - Prob. 4PCh. 26 - Prob. 5PCh. 26 - Prob. 6PCh. 26 - Prob. 7PCh. 26 - Prob. 8PCh. 26 - Prob. 9PCh. 26 - Prob. 10P
Ch. 26 - Prob. 11PCh. 26 - Prob. 12PCh. 26 - Prob. 13PCh. 26 - Prob. 14PCh. 26 - Prob. 15PCh. 26 - Prob. 16PCh. 26 - Prob. 17PCh. 26 - Prob. 18PCh. 26 - Prob. 19PCh. 26 - Prob. 20PCh. 26 - Prob. 21PCh. 26 - Prob. 22PCh. 26 - Prob. 23PCh. 26 - Prob. 24PCh. 26 - Prob. 25PCh. 26 - Prob. 26PCh. 26 - Prob. 27PCh. 26 - Prob. 28PCh. 26 - Prob. 29PCh. 26 - Prob. 30PCh. 26 - Prob. 31PCh. 26 - Prob. 32PCh. 26 - Prob. 33PCh. 26 - Prob. 34PCh. 26 - Prob. 35PCh. 26 - Prob. 36PCh. 26 - Prob. 37PCh. 26 - Prob. 38PCh. 26 - Prob. 39PCh. 26 - Prob. 40PCh. 26 - Prob. 41PCh. 26 - Prob. 42PCh. 26 - Prob. 43PCh. 26 - Prob. 44PCh. 26 - Prob. 45PCh. 26 - Prob. 46PCh. 26 - Prob. 47P
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