Page 1 of 36
WGU 785 BIOCHEMISTRY 2026 FINAL EXAM
COMPLETE CURRENT TESTING QUESTIONS
AND DETAILED CORRECT ANSWERS
(VERIFIED) GUARANTEED PASS/TOP-RATED
A+.
BIOCHEMISTRY
Maximize your success on the WGU 785 Biochemistry Final Exam
with focused preparation that strengthens your understanding of
biomolecule structure and function, metabolic pathways,
enzyme kinetics, and the molecular basis of genetics and
disease. It is specifically designed for health science students to
demonstrate mastery of biochemistry for applications in
medicine and healthcare.
Describe the Cori Cycle. ✓ ✓...... ANSWER ....... The Cori
Cycle is part of the anabolic pathway. It uses the lactate
made by fermentation in the liver and uses gluconeogenesis
to convert 2 lactate to glucose. 2 ATP are made with each
cycle, but it uses 6. The net loss is -4 ATP.
, Page 2 of 36
Describe fermentation. ✓ ✓...... ANSWER .......
Fermentation is the formation of lactate by regenerating the
NAD+ from NADH that was used during glycolysis to make
small amounts of ATP and lactate. It allows glycolysis to
continue in the absence of oxygen.
What does the Cori Cycle supply for red blood cells? ✓
✓...... ANSWER ....... The Cori Cycle supplies glucose for
RBCs.
The Cori Cycle takes up lactate from the blood and uses the
gluconeogenesis pathway to convert 2 molecules of lactate
back to glucose. As the byproduct of anaerobic glycolysis,
lactate diffuses into the blood and is taken up by the liver
where it is converted back into pyruvate by the enzyme
dehydrogenase. The newly formed glucose is released into
the blood to be used again for energy by the red blood cells
and muscles.
Because there is no oxygen present during the Cori Cycle,
pyruvate from glycolysis is converted to lactate. What
happens to this lactate? ✓ ✓...... ANSWER ....... The
lactate made from glycolysis is put into the blood. The liver
, Page 3 of 36
picks up the lactate and uses gluconeogenesis to convert 2
molecules of lactate into glucose.
Which molecule starts the citric acid cycle? ✓ ✓......
ANSWER ....... Acetyl-coA.
Describe the Citric Acid Cycle. ✓ ✓...... ANSWER .......
AKA Kreb's Cycle.
Takes in Acetyl CoA, NAD, FAD, and GDP.
Puts out CO2, NADH, FADH2, and GTP.
Takes place in mitrochondria.
A defect in this cycle will cause low levels of ATP.
It can be inhibited by increased levels of NADH d/t feedback
inhibition.
What is needed in the Citric Acid Cycle to continue aerobic
metabolism? ✓ ✓...... ANSWER ....... NADH and FADH2
What is the effect of glucagon on carbohydrate metabolism?
✓ ✓...... ANSWER ....... Converts glucose into glycogen
, Page 4 of 36
for later use during hyopoglycemia. Glycogenesis: the
formation of glycogen from sugar.
If oxygen is scarce (anaerobic conditions, ie: exercise), what
happens to pyruvate? ✓ ✓...... ANSWER ....... Pyruvate
will be reduced via an anaerobic pathway by the addition of
2 hydrogen atoms to form lactic acid (lactate). This process
is known as fermentation. The formation of lactate
regenerates the NAD+ that was used during glycolysis, thus
allowing glycolysis to continue making small amounts of ATP
for the cell.
RBC rely on _______ as their sole pathway for producing ATP.
✓ ✓...... ANSWER ....... glycolysis.
This is because they lack mitochondria (and therefore the
citric acid cycle and electron transport chain). They are an
example of fermentation.
When there is no more NAD+, fermentation________ ✓
✓...... ANSWER ....... takes NADH from glycolysis to make
lactate and NAD+ to put the NAD+ back into glycolysis.
WGU 785 BIOCHEMISTRY 2026 FINAL EXAM
COMPLETE CURRENT TESTING QUESTIONS
AND DETAILED CORRECT ANSWERS
(VERIFIED) GUARANTEED PASS/TOP-RATED
A+.
BIOCHEMISTRY
Maximize your success on the WGU 785 Biochemistry Final Exam
with focused preparation that strengthens your understanding of
biomolecule structure and function, metabolic pathways,
enzyme kinetics, and the molecular basis of genetics and
disease. It is specifically designed for health science students to
demonstrate mastery of biochemistry for applications in
medicine and healthcare.
Describe the Cori Cycle. ✓ ✓...... ANSWER ....... The Cori
Cycle is part of the anabolic pathway. It uses the lactate
made by fermentation in the liver and uses gluconeogenesis
to convert 2 lactate to glucose. 2 ATP are made with each
cycle, but it uses 6. The net loss is -4 ATP.
, Page 2 of 36
Describe fermentation. ✓ ✓...... ANSWER .......
Fermentation is the formation of lactate by regenerating the
NAD+ from NADH that was used during glycolysis to make
small amounts of ATP and lactate. It allows glycolysis to
continue in the absence of oxygen.
What does the Cori Cycle supply for red blood cells? ✓
✓...... ANSWER ....... The Cori Cycle supplies glucose for
RBCs.
The Cori Cycle takes up lactate from the blood and uses the
gluconeogenesis pathway to convert 2 molecules of lactate
back to glucose. As the byproduct of anaerobic glycolysis,
lactate diffuses into the blood and is taken up by the liver
where it is converted back into pyruvate by the enzyme
dehydrogenase. The newly formed glucose is released into
the blood to be used again for energy by the red blood cells
and muscles.
Because there is no oxygen present during the Cori Cycle,
pyruvate from glycolysis is converted to lactate. What
happens to this lactate? ✓ ✓...... ANSWER ....... The
lactate made from glycolysis is put into the blood. The liver
, Page 3 of 36
picks up the lactate and uses gluconeogenesis to convert 2
molecules of lactate into glucose.
Which molecule starts the citric acid cycle? ✓ ✓......
ANSWER ....... Acetyl-coA.
Describe the Citric Acid Cycle. ✓ ✓...... ANSWER .......
AKA Kreb's Cycle.
Takes in Acetyl CoA, NAD, FAD, and GDP.
Puts out CO2, NADH, FADH2, and GTP.
Takes place in mitrochondria.
A defect in this cycle will cause low levels of ATP.
It can be inhibited by increased levels of NADH d/t feedback
inhibition.
What is needed in the Citric Acid Cycle to continue aerobic
metabolism? ✓ ✓...... ANSWER ....... NADH and FADH2
What is the effect of glucagon on carbohydrate metabolism?
✓ ✓...... ANSWER ....... Converts glucose into glycogen
, Page 4 of 36
for later use during hyopoglycemia. Glycogenesis: the
formation of glycogen from sugar.
If oxygen is scarce (anaerobic conditions, ie: exercise), what
happens to pyruvate? ✓ ✓...... ANSWER ....... Pyruvate
will be reduced via an anaerobic pathway by the addition of
2 hydrogen atoms to form lactic acid (lactate). This process
is known as fermentation. The formation of lactate
regenerates the NAD+ that was used during glycolysis, thus
allowing glycolysis to continue making small amounts of ATP
for the cell.
RBC rely on _______ as their sole pathway for producing ATP.
✓ ✓...... ANSWER ....... glycolysis.
This is because they lack mitochondria (and therefore the
citric acid cycle and electron transport chain). They are an
example of fermentation.
When there is no more NAD+, fermentation________ ✓
✓...... ANSWER ....... takes NADH from glycolysis to make
lactate and NAD+ to put the NAD+ back into glycolysis.
