Essential Organic Chemistry (3rd Edition)
3rd Edition
ISBN: 9780321937711
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Chapter 19, Problem 44P
Interpretation Introduction
Interpretation:
Fructose-1,6-bisphosphate labeled at C-3 and C-4 is obtained when
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Modify the Haworth projection for a-D-galactose provided to draw the structure for a-D-galactose 2-phosphate.
CH₂OH
OH
H
H
OH
H
OH
H
H
OH
:□
5
what is the structure digested by and how many
reducing sugars are present
ОН ОН
Но
OH
HO
Но
HO-
OH
HO,
The trisaccharide pictured could be completely digested (ie into monomers) by
a beta-galactosidase and an alpha-glucosidase
an alpha-galactosidase and sucrase
lactase and sucrase
a beta-fructosidase and lactase
None
Chapter 19 Solutions
Essential Organic Chemistry (3rd Edition)
Ch. 19.4 - Prob. 1PCh. 19.4 - How many molecules of NADH are formed from the...Ch. 19.4 - Why does the OH group add to the -carbon rather...Ch. 19.5 - Prob. 4PCh. 19.5 - Prob. 5PCh. 19.5 - The oxidation of glyceraldehyde-3-phosphate to...Ch. 19.5 - Prob. 7PCh. 19.6 - Prob. 8PCh. 19.6 - Prob. 9PCh. 19.6 - Propose a mechanism for the reduction of...
Ch. 19.7 - Prob. 11PCh. 19.8 - Acid-catalyzed dehydration reactions are normally...Ch. 19.8 - Prob. 13PCh. 19.8 - Prob. 14PCh. 19.8 - Prob. 15PCh. 19.9 - Prob. 16PCh. 19.10 - a. What is the name of the enzyme that converts...Ch. 19.13 - Prob. 18PCh. 19 - Prob. 19PCh. 19 - Prob. 20PCh. 19 - Prob. 21PCh. 19 - Prob. 22PCh. 19 - Prob. 23PCh. 19 - Prob. 24PCh. 19 - Prob. 25PCh. 19 - Prob. 26PCh. 19 - Prob. 27PCh. 19 - Prob. 28PCh. 19 - Prob. 29PCh. 19 - Prob. 30PCh. 19 - Prob. 31PCh. 19 - Prob. 32PCh. 19 - Prob. 33PCh. 19 - Prob. 34PCh. 19 - Prob. 35PCh. 19 - Prob. 36PCh. 19 - Prob. 37PCh. 19 - Prob. 38PCh. 19 - Prob. 39PCh. 19 - Prob. 40PCh. 19 - Prob. 41PCh. 19 - Prob. 42PCh. 19 - Prob. 43PCh. 19 - Prob. 44PCh. 19 - UDP-galactose-4-epimerase converts UDP-galactose...Ch. 19 - A student is trying to determine the mechanism for...Ch. 19 - What would be the results of the experiment in...
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- One of the steps in the pentose phosphate pathway for glucose catabolism is the reaction of xylulose 5-phosphate with ribose 5-phosphate in the presence of a transketolase to give glyceraldehyde 3-phosphate and sedoheptulose 7-phosphate. (a) The first part of the reaction is nucleophilic addition of thiamin diphosphate (TPP) ylide to xylulose 5-phosphate, followed by a retro-aldol cleavage to give glyceraldehyde 3-phosphate and a TPPcontaining enamine. Show the structure of the enamine and the mechanism by which it is formed. (b) The second part of the reaction is addition of the enamine to ribose 5-phosphate followed by loss of TPP ylide to give sedoheptulose 7-phosphate. Show the mechanism.arrow_forwardStep 7 of the citric acid cycle is shown. Which statement best describes what occurs in this step? CO₂ 1 CH || CH + H₂O CO₂ fumarate CO₂™ fumarase HO C-H CH₂ CO₂ malate A) Fumarate undergoes hydrogenation with hydrogens and electrons provided by the enzyme fumarase. B) Fumarate undergoes hydration with the aid of the enzyme fumarase. C) Fumarate undergoes hydrolysis with the aid of the enzyme fumarase. D) Fumarate undergoes reduction with the aid of the cofactor fumarase.arrow_forward(i) Write the product obtained when D-glucose reacts with HCN. (ii) What type of bonding stabilizes the α-helix structure of proteins? (iii) Write the name of the disease caused by the deficiency of vitamin B12arrow_forward
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- 4. Answer the following questions about the ketohexose 7 below. CH₂OH H-OH OH H CH₂OH 7 (i) Is the ketohexose 7 a natural D-sugar? Provide a short explanation for the answer. (ii) Draw the a-pyranose form of 7. +H HOarrow_forwarda Lactate dehydrogenase H H3C-C-coO- ОН ooc-C-CH3 L-(+)-Lactase Pyruvate This is a(an) b Creatine kinase CH3 O CH3 O H2N, АТР ADP NH2 NH2 Adenosine triphosphate Adenosine diphosphate Creatine Phosphocreatine This is a(an)arrow_forwardKk.308.arrow_forward
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