Describe how glucose-6-phosphate formed by glycogen breakdown in
the liver converts to glucose by glucose-6-phosphatase and how the
newly formed glucose leaves the liver cells. Describe why this
process allows for separation from glycolysis.
Consider the oxidation of a single glucose molecule. How many
carbons from that glucose molecule remain to be oxidized following
a single turn of the TCA cycle?
The hydrolysis of glucose-6- phosphate to give glucose plus
phosphate has a ∆G o = - 3.3 kcal/mol. In the liver glucose
concentrations are extremely high during the fed state because of
the proximity of the liver to the portal vein, and thus hydrolysis
should be unfavorable. What is ∆G for this hydrolysis reaction at
0.5 M glucose, 0.01 M phosphate and 10 -6 M for glucose-6-
phosphate? (Assume 2.303RT = 1360 cal/mol.)
A. -3460 cal/mol
B. -1730 cal/mol
C....
. How is glucose
stored for fuel in animals? Draw/describe the structure
of the molecule(s). (5 pts)
b. How is glucose stored for fuel in
plants? Draw/describe the structure of the molecule(s). (5 pts)
draw the mechanism for aldolase with glucose-6-phosphate that
indicates why glucose-6-phosphate is not an appropriate substrate
in terms of efficienty having a convergent pathway
Describe the fate of a single molecule of glucose as it goes
through glycolysis and exits the Krebs cycle. Include the inputs to
each reaction and all end products including all created energy
storage molecules.
One molecule of glyceraldehyde-3-phosphate is fed into
glycolysis. Which and how many electron carrier molecule(s) are
made during (A) the glycolytic breakdown of this molecule, during
(B) acetyl-CoA production and during (C) the citric acid cycle? (D)
How many H+ are translocated across the mitochrondrial
membrane due to the re-oxidation of these electron carriers? Write
the numbers into the respective boxes.
This question is very important for me to understand. Please
only respond if you are answering all parts and...
Describe the path a molecule of threonine would take in the
formation of glucose. Include every step (metabolic intermediates)
and pertinent enzymes. Note: threonine is converted to succinyl CoA
upon its catabolism