MCB 450 Exam 4 Q & As (Verified
Answers) 2026 Update
what is gluconeogenesis - Correct Answers ✅The synthesis
of glucose from molecules that are NOT carbohydrates, such
as lactate, glycerol, and amino acids, particularly alanine.
when does Gluconeogenesis occur - Correct Answers
✅*formation of glucose from noncarbohydrate sources (eg
fatty acids, amino acids)
Occurs during fasted state
what is the Importance of glucose levels maintenance -
Correct Answers ✅*Brain's primary fuel
Red blood cells use glucose as their only fuel
what are the major site of gluconeogenesis - Correct
Answers ✅*liver and small amount in kidney*
Maintain glucose level in blood
In prolonged fasting (starvation) state kidney contributes
more
little site of gluconeogenesis
Brain, skeletal muscle or heart*use glucose from blood -
Correct Answers ✅
,MCB 450 Exam 4 Q & As (Verified
Answers) 2026 Update
The gluconeogenic pathway converts - Correct Answers
✅pyruvate into glucose
what are the sources of blood glucose in the fed, fasting and
starvation states - Correct Answers ✅gut
liver
in the fasting state and starved state the precursors are -
Correct Answers ✅glycerol
amino acids
lactate
-they can be converted into glucose
-brain, rbc and other tissues can use glucose
in fasting state, what reaction takes place, where, and occurs
by what - Correct Answers ✅Glycogen, glycerol, amino
acids, lactate -> glucose
-Takes place in liver
-glucose goes to brain, RBC, other tissues
-Occurs by gluconeogenesis
starved state(Sources of blood glucose) - Correct Answers
✅glycerol, amino acids, lactate -> glucose*
Takes place in liver*
,MCB 450 Exam 4 Q & As (Verified
Answers) 2026 Update
glucose goes to brain, RBC, other tissues*
Occurs by gluconeogenesis
Fed state (Sources of blood glucose) - Correct Answers
✅Dietary carbohydrate -> Glucose
- Takes place in gut
-No need for gluconeogensis
differences between glycolysis and gluconeogeneis - Correct
Answers ✅11 steps in glycolysis
7 of them are reversible
only 4 reactions that are
what are the 4 irreversible steps of Gluconeogenesis -
Correct Answers ✅-formation of phosphoenolpyruvate
-formation of frutose 1,6 phosphatase
-glucose 6 phosphatase
in Gluconeogenesis, what needs to be made so the cycle can
continue - Correct Answers ✅
, MCB 450 Exam 4 Q & As (Verified
Answers) 2026 Update
draw out the pathways for glycolysis and gluconeogenesis -
Correct Answers ✅
Gluconeogenesis is the reverse of Glycolysis - Correct
Answers ✅
Glycolysis - Correct Answers ✅-Glucose is catabolized
- ATP is produced
- NAD+ is reduced to generate NADH
Gluconeogenesis - Correct Answers ✅-Glucose is
synthesized
- ATP is consumed
- NADH is oxidized to generate NAD+
The reactions in the gluconeogenesis pathway CANNOT be
the exact reverse of the reactions in the glycolysis pathway.
WHY?
location because - Correct Answers ✅*Glycolysis starts in
cytoplasm
*Gluconeogenesis starts in mitochondria
The reactions in the gluconeogenesis pathway CANNOT be
the exact reverse of the reactions in the glycolysis pathway.
WHY?
Answers) 2026 Update
what is gluconeogenesis - Correct Answers ✅The synthesis
of glucose from molecules that are NOT carbohydrates, such
as lactate, glycerol, and amino acids, particularly alanine.
when does Gluconeogenesis occur - Correct Answers
✅*formation of glucose from noncarbohydrate sources (eg
fatty acids, amino acids)
Occurs during fasted state
what is the Importance of glucose levels maintenance -
Correct Answers ✅*Brain's primary fuel
Red blood cells use glucose as their only fuel
what are the major site of gluconeogenesis - Correct
Answers ✅*liver and small amount in kidney*
Maintain glucose level in blood
In prolonged fasting (starvation) state kidney contributes
more
little site of gluconeogenesis
Brain, skeletal muscle or heart*use glucose from blood -
Correct Answers ✅
,MCB 450 Exam 4 Q & As (Verified
Answers) 2026 Update
The gluconeogenic pathway converts - Correct Answers
✅pyruvate into glucose
what are the sources of blood glucose in the fed, fasting and
starvation states - Correct Answers ✅gut
liver
in the fasting state and starved state the precursors are -
Correct Answers ✅glycerol
amino acids
lactate
-they can be converted into glucose
-brain, rbc and other tissues can use glucose
in fasting state, what reaction takes place, where, and occurs
by what - Correct Answers ✅Glycogen, glycerol, amino
acids, lactate -> glucose
-Takes place in liver
-glucose goes to brain, RBC, other tissues
-Occurs by gluconeogenesis
starved state(Sources of blood glucose) - Correct Answers
✅glycerol, amino acids, lactate -> glucose*
Takes place in liver*
,MCB 450 Exam 4 Q & As (Verified
Answers) 2026 Update
glucose goes to brain, RBC, other tissues*
Occurs by gluconeogenesis
Fed state (Sources of blood glucose) - Correct Answers
✅Dietary carbohydrate -> Glucose
- Takes place in gut
-No need for gluconeogensis
differences between glycolysis and gluconeogeneis - Correct
Answers ✅11 steps in glycolysis
7 of them are reversible
only 4 reactions that are
what are the 4 irreversible steps of Gluconeogenesis -
Correct Answers ✅-formation of phosphoenolpyruvate
-formation of frutose 1,6 phosphatase
-glucose 6 phosphatase
in Gluconeogenesis, what needs to be made so the cycle can
continue - Correct Answers ✅
, MCB 450 Exam 4 Q & As (Verified
Answers) 2026 Update
draw out the pathways for glycolysis and gluconeogenesis -
Correct Answers ✅
Gluconeogenesis is the reverse of Glycolysis - Correct
Answers ✅
Glycolysis - Correct Answers ✅-Glucose is catabolized
- ATP is produced
- NAD+ is reduced to generate NADH
Gluconeogenesis - Correct Answers ✅-Glucose is
synthesized
- ATP is consumed
- NADH is oxidized to generate NAD+
The reactions in the gluconeogenesis pathway CANNOT be
the exact reverse of the reactions in the glycolysis pathway.
WHY?
location because - Correct Answers ✅*Glycolysis starts in
cytoplasm
*Gluconeogenesis starts in mitochondria
The reactions in the gluconeogenesis pathway CANNOT be
the exact reverse of the reactions in the glycolysis pathway.
WHY?
