SaplingPlus for Lehninger Principles of Biochemistry (Six-Month Access)
7th Edition
ISBN: 9781319108236
Author: David L. Nelson, Michael M. Cox
Publisher: W. H. Freeman
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Chapter 23, Problem 18P
Summary Introduction
To determine: The effect on insulin secreted by pancreatic β cells when insulin is exposed to potassium ionophore valinomycin.
Concept introduction:
Insulin is a peptide hormone that is secreted by pancreas. It is produced naturally in the body of organism. It is needed by cells to use glucose for energy demand. It regulates the blood sugar level. It is also an anabolic hormone.
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Macmillan Learning
Cholesterol synthesis begins with the formation of mevalonate from acetyl CoA. This
process activates mevalonate and converts it to isopentenyl pyrophosphate.
Identify the atoms in mevalonate and isopentenyl pyrophosphate that will be labeled
from acetyl CoA labeled with 14C in the carbonyl carbon. Place 14C atoms and C atoms
to denote which carbon atoms are labeled and which are not labeled.
H₂C
COA
14C-labeled acetyl-CoA
HHH
[c]
H
H
OH
014C
- OH
H
HH
H
Mevalonate
CH3
H H
14C
H
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H
H
Incorrect Answer
of o
-P-O-P-0-
Isopentenyl pyrophosphate
с
Answer Bank
14C
Draw the reaction between sphingosine and arachidonic acid. Draw out the full structures.
Chapter 23 Solutions
SaplingPlus for Lehninger Principles of Biochemistry (Six-Month Access)
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