WGU C785 Biochemistry Final Exam
Which of the following enzymes is part of both the TCA cycle and the electron transport
chain?
ATP synthase (Complex I)
NADH oxidoreductatase
Cytochrome c
Succinate dehydrogenase (Complex II) –
Succinate dehydrogenase
ATP is used to carry energy within the cell. The majority of energy in ATP is stored
within which of the following bonds indicated on the image below?
3
1
2
4-1
In the case of a deficiency in phenylalanine hydroxylase which of the following amino
acids will become essential?
Cysteine
Tyrosine
Typtophan
Methionine
Homocysteine - Tyrosine
In the electron transport chain, which of the following compounds in the terminal
electron acceptor?
O2
FAD
,NAD+
H2O - O2
Which of the following is an example of mechanical work?
Cleavage of a high energy phosphate bond to facilitate muscle contraction
Movement of glucose from the intestinal lumen into the cell
Formation of UDP glucose from glucose 1-phosphate
Oxidation of glucose to pyruvate - Cleavage of a high energy phosphate bond to
facilitate muscle contraction
After fasting for 6 hours which of the following would be consistent with the hormone
levels of this individual?
1
2
3
4
5-4
Fructose 1-6 Biophosphate will enhance the activity of which of the following enzymes?
Pyruvate dehydrogenase complex
hexokinase
Pyruvate kinase
pyruvate dehydrogenase kinase
Glycogen phosphorylase - pyruvate kinase
Which of the following tissues can use glucose, but not fatty Acids, as a source of fuel?
Skeletal Muscle
Cardiac tissue
, Liver
Red Blood Cells
Adipose - Red Blood Cells
Within the red blood cell, NADPH is required for which of the following processes?
The Conversion of pyruvate to Acetyl CoA
The Oxidation of hemoglobin
The conversion of pyruvate to lactate
The synthesis of ribulose 5-Phosphate
The Reduction of Glutathione - The Reduction of Glutathione
There are several anaplerotic reactions required to replenish intermediates of the TCA
cycle. All of the following compounds can be used for these anaplerotic reactions
EXCEPT:
Aspartate
Propionyl
Glutamate
Odd Chain fatty acids
Glucose - Glucose
Hereditary fructose intolerance is a rare recessive disease caused by a mutation in
exon 5. The mutation creates a new Ahall restriction within the exon. In this graphic:
the husband had al b deficiency
the wife has 2 wild alleles
Jill has wild recessive
jack and jill have same genes - the wife has 2 wild allells
A 3-year-old boy who presented with generalized hypotonia, severe psychomotor
development delay, and severe lactic acidosis following ingestion of a high
Which of the following enzymes is part of both the TCA cycle and the electron transport
chain?
ATP synthase (Complex I)
NADH oxidoreductatase
Cytochrome c
Succinate dehydrogenase (Complex II) –
Succinate dehydrogenase
ATP is used to carry energy within the cell. The majority of energy in ATP is stored
within which of the following bonds indicated on the image below?
3
1
2
4-1
In the case of a deficiency in phenylalanine hydroxylase which of the following amino
acids will become essential?
Cysteine
Tyrosine
Typtophan
Methionine
Homocysteine - Tyrosine
In the electron transport chain, which of the following compounds in the terminal
electron acceptor?
O2
FAD
,NAD+
H2O - O2
Which of the following is an example of mechanical work?
Cleavage of a high energy phosphate bond to facilitate muscle contraction
Movement of glucose from the intestinal lumen into the cell
Formation of UDP glucose from glucose 1-phosphate
Oxidation of glucose to pyruvate - Cleavage of a high energy phosphate bond to
facilitate muscle contraction
After fasting for 6 hours which of the following would be consistent with the hormone
levels of this individual?
1
2
3
4
5-4
Fructose 1-6 Biophosphate will enhance the activity of which of the following enzymes?
Pyruvate dehydrogenase complex
hexokinase
Pyruvate kinase
pyruvate dehydrogenase kinase
Glycogen phosphorylase - pyruvate kinase
Which of the following tissues can use glucose, but not fatty Acids, as a source of fuel?
Skeletal Muscle
Cardiac tissue
, Liver
Red Blood Cells
Adipose - Red Blood Cells
Within the red blood cell, NADPH is required for which of the following processes?
The Conversion of pyruvate to Acetyl CoA
The Oxidation of hemoglobin
The conversion of pyruvate to lactate
The synthesis of ribulose 5-Phosphate
The Reduction of Glutathione - The Reduction of Glutathione
There are several anaplerotic reactions required to replenish intermediates of the TCA
cycle. All of the following compounds can be used for these anaplerotic reactions
EXCEPT:
Aspartate
Propionyl
Glutamate
Odd Chain fatty acids
Glucose - Glucose
Hereditary fructose intolerance is a rare recessive disease caused by a mutation in
exon 5. The mutation creates a new Ahall restriction within the exon. In this graphic:
the husband had al b deficiency
the wife has 2 wild alleles
Jill has wild recessive
jack and jill have same genes - the wife has 2 wild allells
A 3-year-old boy who presented with generalized hypotonia, severe psychomotor
development delay, and severe lactic acidosis following ingestion of a high
