For the following reaction (Table 20.1): FAD +2 cyt c (Fe*2) +2 H* → FADH2 + 2 cyt c (Fe+3) a The cytochrome couple is the acceptor because it has the higher (more positive) reduction potential. Consider the oxidation of Succinate by molecular oxygen as carried out via the electron transport pathway: Succinate + 1/202→ Fumarate + H20 b If E,' (Fumarate/Succinate) = +0.031 V and E,' (1/20,/H20) = +0.816 V AG,' = -151.5 kJ/mol In different organisms Sucrose can be cleaved either by hydrolysis or by phosphorolysis. The ATP yield per mole of Sucrose metabolized by hydrolysis is 5 (2 from each Glucose and 3 from Fructose). For the oxidation of NADH by molecular oxygen as carried out via the electron transport pathway: If Eo' (NAD*/NADH) = d -0.32 V and E, (1/20,/H20) = +0.816 V the AG,' for the reaction is -219 kJ/mol Glucose labelled in carbon number one with radioactive carbon and taken through the oxidative reactions of the Pentose Phosphate Pathway will give rise to radioactive Ribulose 5-phosphate e If Sucrose is subjected to phosphorolysis the ATP yield per mole of Sucrose metabolized is 4 (2 from each Glucose and f Fructose) Starting with Glucose 6-phosphate labelled in carbon number 2 with radioactive carbon and taken through the oxidative g phase of the Pentose Phosphate Pathway and the first transaldolase reaction gives rise to a 7-carbon intermediate labeled with radioactive carbon in carbon number 1 Three ATP equivalents are consumed in the conversion of Dihydroxyacetone phosphate to a glycosyl residue of glycogen i An individual with Glucose-6-phosphatase deficiency suffers from chronic hypoglycemia
For the following reaction (Table 20.1): FAD +2 cyt c (Fe*2) +2 H* → FADH2 + 2 cyt c (Fe+3) a The cytochrome couple is the acceptor because it has the higher (more positive) reduction potential. Consider the oxidation of Succinate by molecular oxygen as carried out via the electron transport pathway: Succinate + 1/202→ Fumarate + H20 b If E,' (Fumarate/Succinate) = +0.031 V and E,' (1/20,/H20) = +0.816 V AG,' = -151.5 kJ/mol In different organisms Sucrose can be cleaved either by hydrolysis or by phosphorolysis. The ATP yield per mole of Sucrose metabolized by hydrolysis is 5 (2 from each Glucose and 3 from Fructose). For the oxidation of NADH by molecular oxygen as carried out via the electron transport pathway: If Eo' (NAD*/NADH) = d -0.32 V and E, (1/20,/H20) = +0.816 V the AG,' for the reaction is -219 kJ/mol Glucose labelled in carbon number one with radioactive carbon and taken through the oxidative reactions of the Pentose Phosphate Pathway will give rise to radioactive Ribulose 5-phosphate e If Sucrose is subjected to phosphorolysis the ATP yield per mole of Sucrose metabolized is 4 (2 from each Glucose and f Fructose) Starting with Glucose 6-phosphate labelled in carbon number 2 with radioactive carbon and taken through the oxidative g phase of the Pentose Phosphate Pathway and the first transaldolase reaction gives rise to a 7-carbon intermediate labeled with radioactive carbon in carbon number 1 Three ATP equivalents are consumed in the conversion of Dihydroxyacetone phosphate to a glycosyl residue of glycogen i An individual with Glucose-6-phosphatase deficiency suffers from chronic hypoglycemia
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:For the following reaction (Table 20.1):
FAD +2 cyt c (Fe*2) +2 H* → FADH2 + 2 cyt c (Fe+3)
a
The cytochrome couple is the acceptor because it has the higher (more positive) reduction potential.
Consider the oxidation of Succinate by molecular oxygen as carried out via the electron transport pathway:
Succinate + 1/202→ Fumarate + H20
b
If E,' (Fumarate/Succinate) = +0.031 V and E,' (1/20,/H20) = +0.816 V
AG,' = -151.5 kJ/mol
In different organisms Sucrose can be cleaved either by hydrolysis or by phosphorolysis. The ATP yield per mole of
Sucrose metabolized by hydrolysis is 5 (2 from each Glucose and 3 from Fructose).
For the oxidation of NADH by molecular oxygen as carried out via the electron transport pathway: If Eo' (NAD*/NADH) =
d
-0.32 V and E, (1/20,/H20) = +0.816 V the AG,' for the
reaction is -219 kJ/mol
Glucose labelled in carbon number one with radioactive carbon and taken through the oxidative reactions of the Pentose
Phosphate Pathway will give rise to radioactive Ribulose 5-phosphate
e
If Sucrose is subjected to phosphorolysis the ATP yield per mole of Sucrose metabolized is 4 (2 from each Glucose and
f
Fructose)
Starting with Glucose 6-phosphate labelled in carbon number 2 with radioactive carbon and taken through the oxidative
g phase of the Pentose Phosphate Pathway and the first transaldolase reaction gives rise to a 7-carbon intermediate labeled
with radioactive carbon in carbon number 1
Three ATP equivalents are consumed in the conversion of Dihydroxyacetone phosphate to a glycosyl residue of glycogen
i
An individual with Glucose-6-phosphatase deficiency suffers from chronic hypoglycemia
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