WGU C785 BIOCHEMISTRY FINAL EXAM TEST 2022/2023
UPDATE(VERIFIED QUESTIONS AND ANSWERS)
Which of the following enzymes is part of both the TCA cycle and ETC? (correct answers)Succinate
dehydrogenase
The majority of energy in ATP is stored within which of the following bonds below? (correct answers)1
In the case of deficiency in phenylalanine hydroxlase which of the following amino acids will become
essential (correct answers)Tyrosine
HFI is a rare recessive disorder. Which of the following is not a consequence of this enzyme deficiency?
(correct answers)They will have low blood sugar (hypoglycemia), especially after eating fruits, fructose,
sucrose, jaundice, excessive sleepiness, convulsions, irritability
When the pancreatic beta cells sense an increase in glucose, the release of insulin is facilitated through
which of the following mechanisms? (correct answers)Increase in intracellular calcium
During aerobic exercise, intracellular calcium increases and which of the following will occur? (correct
answers)Isocitrate dehydrogenase and alpha-keto glutarate dehydrogenase are allosterically activated
by increase in calcium
Within the red blood cell, the lack of which of the following compounds can result in exercessive
hemolysis and jaundice? (correct answers)NADPH
After fasting for 6 hours which of the following would be consistent with hormone levels of this
individual? (correct answers)Insulin (-), Glucagon (+), Cortisol (+), Epinephrine (+)
, There is a gain of function mutation in the insulin receptor substrate that makes it permanently bound
to the insulin receptor substrate that makes it permanently bound to the insulin receptor. Which of the
following may occur as a result of this mutation. (correct answers)Increase in protein kinase B activity
Which of the following activators is correctly paired with the enzyme that activates it? (correct
answers)Fructose-2,6-bisphosphate : phosphofructokinase 1
Fructose 1,6 bisphosphate will enhance the activity of which of the following enzymes? (correct
answers)
Under fed conditions, glucose taken up by the liver is primarily used for which of the following
processes? (correct answers)It is used as a substrate for liver glycogen synthesis
In the malate aspartate shuttle, cytosolic oxaloacetate is __________ to form _________ as a means of
moving reducing equivalents across the mitochondrial membrane. (correct answers)
Which of the following process is considered to be catabolic? (correct answers)Glycogenolysis
In an individual with a deficiency in PDC, which of the following reactions would be directly impaired?
(correct answers)Pyruvate Acetyl CoA
Monocytes are unique cells that secrete the cytokine, interleukin-1. Once released, this cytokine will
bind a receptor on the outside of the monocytes and regulate its response. In this situation interleukin-1
is best described as which of the following? (correct answers)An autocrine signal
NADH generated in the cytosol must be transported across the mitochondrial membrane in order to be
oxidized by the electron transport chain. (correct answers)
Which of the following shuttles or transporters can be used to facilitate the movement of cytosolic
NADH into the mitochondria? (correct answers)Malate-aspartate shuttle
UPDATE(VERIFIED QUESTIONS AND ANSWERS)
Which of the following enzymes is part of both the TCA cycle and ETC? (correct answers)Succinate
dehydrogenase
The majority of energy in ATP is stored within which of the following bonds below? (correct answers)1
In the case of deficiency in phenylalanine hydroxlase which of the following amino acids will become
essential (correct answers)Tyrosine
HFI is a rare recessive disorder. Which of the following is not a consequence of this enzyme deficiency?
(correct answers)They will have low blood sugar (hypoglycemia), especially after eating fruits, fructose,
sucrose, jaundice, excessive sleepiness, convulsions, irritability
When the pancreatic beta cells sense an increase in glucose, the release of insulin is facilitated through
which of the following mechanisms? (correct answers)Increase in intracellular calcium
During aerobic exercise, intracellular calcium increases and which of the following will occur? (correct
answers)Isocitrate dehydrogenase and alpha-keto glutarate dehydrogenase are allosterically activated
by increase in calcium
Within the red blood cell, the lack of which of the following compounds can result in exercessive
hemolysis and jaundice? (correct answers)NADPH
After fasting for 6 hours which of the following would be consistent with hormone levels of this
individual? (correct answers)Insulin (-), Glucagon (+), Cortisol (+), Epinephrine (+)
, There is a gain of function mutation in the insulin receptor substrate that makes it permanently bound
to the insulin receptor substrate that makes it permanently bound to the insulin receptor. Which of the
following may occur as a result of this mutation. (correct answers)Increase in protein kinase B activity
Which of the following activators is correctly paired with the enzyme that activates it? (correct
answers)Fructose-2,6-bisphosphate : phosphofructokinase 1
Fructose 1,6 bisphosphate will enhance the activity of which of the following enzymes? (correct
answers)
Under fed conditions, glucose taken up by the liver is primarily used for which of the following
processes? (correct answers)It is used as a substrate for liver glycogen synthesis
In the malate aspartate shuttle, cytosolic oxaloacetate is __________ to form _________ as a means of
moving reducing equivalents across the mitochondrial membrane. (correct answers)
Which of the following process is considered to be catabolic? (correct answers)Glycogenolysis
In an individual with a deficiency in PDC, which of the following reactions would be directly impaired?
(correct answers)Pyruvate Acetyl CoA
Monocytes are unique cells that secrete the cytokine, interleukin-1. Once released, this cytokine will
bind a receptor on the outside of the monocytes and regulate its response. In this situation interleukin-1
is best described as which of the following? (correct answers)An autocrine signal
NADH generated in the cytosol must be transported across the mitochondrial membrane in order to be
oxidized by the electron transport chain. (correct answers)
Which of the following shuttles or transporters can be used to facilitate the movement of cytosolic
NADH into the mitochondria? (correct answers)Malate-aspartate shuttle
