Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Chapter 29.SE, Problem 55AP
In step 7 of fatty-acid biosynthesis (Figure 29-5), dehydration of a β-hydroxy thioester occurs to give trans-crotonyl ACP. Is the dehydration a syn elimination or an anti elimination?
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tions are involved in their biosynthesis?
HO,
CH,CH,NH,
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CH,CH,NHCCH,
(a)
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Serotonin
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H-C-U-o
27. The following is step 3 of the citric acid cycle. What is the functional
transformation that occurs in the first part of this step?
group
COO
COO
NAD*
NADH + H*
CH2
CH2 0
H-C-C
CH2
H-C-H
H-C-COO-
Но-с-н
COO
COO
Isocitrate
a-ketoglutarate
A) A ketone and an alcohol change positions.
C) The -COO is transformed.
B) An alcohol becomes a ketone.
D) The alcohol becomes an aldehyde.
28. The following is step 3 of the citric acid cycle. What is the identity of the
Molecule represented by I?
COO
COO
NAD*
NADH + H*
I
COO
CH2
CH2 0
H-C-C
CH2
H-C-H
H-C-COO-
HO-C-H
COO
COO
Isocitrate
a-ketoglutarate
A) Acetate
B) GTP
C) NADH D) FADH2
E) CO2
The formation of a thiol ester makes
o a) ATP
ob) NADH
oc) Acetyl COA
od) Coenzyme A
QUESTION 5
is a polymer of
a) Phospholipid; fatty acids
b) Cholesterol; isoprene units
c) A wax; fatty acids
od) Sphingolipid; sphingosine
a high energy compound.
QUESTION 6
In the glycolysis pathway, 1,3 bisphosphoglycerate is converted to 3-phosphoglycerate via a phosphate transfer reaction in
which ATP is formed from ADP. The hydrolysis of a
bond provides the energy to produce this ATP.
o a) phosphate ester
ob) acylphosphate
o c) phosphoanhydride
d) thioester
Chapter 29 Solutions
Organic Chemistry
Ch. 29.1 - Prob. 1PCh. 29.3 - Write the equations for the remaining passages of...Ch. 29.3 - Prob. 3PCh. 29.4 - Write a mechanism for the dehydration reaction of...Ch. 29.4 - Evidence for the role of acetate in fatty-acid...Ch. 29.4 - Does the reduction of acetoacetyl ACP in step 6...Ch. 29.5 - Prob. 7PCh. 29.5 - Look at the entire glycolysis pathway, and make a...Ch. 29.6 - Prob. 9PCh. 29.7 - Prob. 10P
Ch. 29.7 - Write mechanisms for step 2 of the citric acid...Ch. 29.7 - Prob. 12PCh. 29.8 - Prob. 13PCh. 29.9 - Write all the steps in the transamination reaction...Ch. 29.9 - What -keto acid is formed on transamination of...Ch. 29.9 - Prob. 16PCh. 29.SE - Prob. 17VCCh. 29.SE - Identify the following intermediate in the citric...Ch. 29.SE - The following compound is an intermediate in the...Ch. 29.SE - Prob. 20VCCh. 29.SE - In the pentose phosphate pathway for degrading...Ch. 29.SE - Prob. 22MPCh. 29.SE - One of the steps in the pentose phosphate pathway...Ch. 29.SE - One of the steps in the pentose phosphate pathway...Ch. 29.SE - Prob. 25MPCh. 29.SE - Prob. 26MPCh. 29.SE - Prob. 27MPCh. 29.SE - Prob. 28MPCh. 29.SE - Prob. 29MPCh. 29.SE - Prob. 30MPCh. 29.SE - Prob. 31MPCh. 29.SE - Prob. 32APCh. 29.SE - Prob. 33APCh. 29.SE - Prob. 34APCh. 29.SE - Prob. 35APCh. 29.SE - Prob. 36APCh. 29.SE - Prob. 37APCh. 29.SE - Prob. 38APCh. 29.SE - Prob. 39APCh. 29.SE - Prob. 40APCh. 29.SE - Prob. 41APCh. 29.SE - Prob. 42APCh. 29.SE - Prob. 43APCh. 29.SE - Prob. 44APCh. 29.SE - Prob. 45APCh. 29.SE - Prob. 46APCh. 29.SE - Prob. 47APCh. 29.SE - Prob. 48APCh. 29.SE - Prob. 49APCh. 29.SE - Prob. 50APCh. 29.SE - In glycerol metabolism, the oxidation of...Ch. 29.SE - Prob. 52APCh. 29.SE - Prob. 53APCh. 29.SE - Prob. 54APCh. 29.SE - In step 7 of fatty-acid biosynthesis (Figure...Ch. 29.SE - Prob. 56AP
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