BCH403 FINAL EXAM COMBINED SET
PREPARATION QUESTIONS WITH
CORRECT ANSWERS
Which of the following is a way to desensitized signal transduction? - Answer-
Phosphodiesterases convert cAMP into AMP
Which bilayer containing the following lipids will have the lowest Tm? - Answer-18:2
Individual reaction within a pathway ________ irreversible - Answer-May be
A reaction that transfers a high energy phosphate bond from a molecule of ATP to
another molecule is called: - Answer-Coupling reaction
________ is the overall regulator of intermediary metabolic processes on a cell-wide
basis - Answer-Relative concentrations of ATP, ADP, and AMP
Metabolic pathways: - Answer-Always end at a specific molecule
The insulin-dependent glucose transporter is: - Answer-GLUT4
Glucose is effectively trapped in cells by: - Answer-Hexokinase
_______ is the most important regulatory enzyme of glycolysis - Answer-
Phosphofructokinase-1
The regulated step of glycolysis that generates ATP is: - Answer-Pyruvate kinase
_______ is the most important regulatory enzyme of gluconeogenesis - Answer-
Fructise-1,6-bisphosphatase
The gluconeogenic enzyme found in mitochondria is: - Answer-Pyruvate carboxylase
Phosphoenolpyruvate carboxykinase (PEPCK) in the kidney cortex is involved in the
synthesis of: - Answer-Glucose
Glucose is primarily synthesized in: - Answer-Liver
During glycogenesis, α(1→6) linkages are synthesized by: - Answer-Branching enzyme
The starting point of glycogenesis is: - Answer-Glucose-6-phosphate
, During digestion of dietary polysaccharides, α(1→6) linkages are primarily cleaved by: -
Answer-Isomaltase
Hexokinase, but not glucokinase, is regulated by: - Answer-Glucose-6-phosphate
Fructose-2,6-biphosphate: - Answer-Allosterically activates phosphofructokinase-1 by
preventing allosteric inhibitors frombinding to the enzyme
Glycogen synthase a is: - Answer-unphosphorylated and active
Pyruvate kinase and Pyruvate carboxylase are both regulated by: - Answer-Acetyl-CoA
Lactate dehydrogenase: - Answer-Regenerates NAD+ so that the glycolytic enzyme
glyceraldehyde-3-phosphatedehydrogenase can continue to catalyze its substrate
The tricarboxylic acid (TCA, Kreb's, Citric Acid) cycle is found in: - Answer-Mitochondria
The primary regulated step of the tricarboxylic acid (TCA, Kreb's, Citric Acid) cycle is: -
Answer-Citrate synthase
The tricarboxylic acid TCA, Kreb's, Citric Acid) cycle generates one FADH2 per cycle.
The correct order of electron flow from this FADH2 to O2 is: - Answer-Complex II →
CoQ → Complex III → Cyt C → Complex IV → O2
The respiratory complex that transfers electrons from NADH to CoQ is: - Answer-
Complex I
Complex II pumps ___ electrons into the mitochondrial intermembrane space per
FADH2 - Answer-0
In the Liver, electrons from cytoplasmic NADH are transported into the mitochondria via:
- Answer-Malate/Aspartate shuttle
The site of ATP synthesis in Complex V (or ATP synthase or F0F1 complex) is: -
Answer-αβ-subunits
The regulated step of triacylglycerol biosynthesis is: - Answer-Glycerol-3-phosphate
acyltransferase
Acetyl-CoA used to synthesize fatty acids: - Answer-is generated in the cytoplasm by
ATP citrate lyase
______ is the last common intermediate of triacylglycerol biosynthesis and all
glycerophospholipid biosynthesis - Answer-Phosphatidic acid
PREPARATION QUESTIONS WITH
CORRECT ANSWERS
Which of the following is a way to desensitized signal transduction? - Answer-
Phosphodiesterases convert cAMP into AMP
Which bilayer containing the following lipids will have the lowest Tm? - Answer-18:2
Individual reaction within a pathway ________ irreversible - Answer-May be
A reaction that transfers a high energy phosphate bond from a molecule of ATP to
another molecule is called: - Answer-Coupling reaction
________ is the overall regulator of intermediary metabolic processes on a cell-wide
basis - Answer-Relative concentrations of ATP, ADP, and AMP
Metabolic pathways: - Answer-Always end at a specific molecule
The insulin-dependent glucose transporter is: - Answer-GLUT4
Glucose is effectively trapped in cells by: - Answer-Hexokinase
_______ is the most important regulatory enzyme of glycolysis - Answer-
Phosphofructokinase-1
The regulated step of glycolysis that generates ATP is: - Answer-Pyruvate kinase
_______ is the most important regulatory enzyme of gluconeogenesis - Answer-
Fructise-1,6-bisphosphatase
The gluconeogenic enzyme found in mitochondria is: - Answer-Pyruvate carboxylase
Phosphoenolpyruvate carboxykinase (PEPCK) in the kidney cortex is involved in the
synthesis of: - Answer-Glucose
Glucose is primarily synthesized in: - Answer-Liver
During glycogenesis, α(1→6) linkages are synthesized by: - Answer-Branching enzyme
The starting point of glycogenesis is: - Answer-Glucose-6-phosphate
, During digestion of dietary polysaccharides, α(1→6) linkages are primarily cleaved by: -
Answer-Isomaltase
Hexokinase, but not glucokinase, is regulated by: - Answer-Glucose-6-phosphate
Fructose-2,6-biphosphate: - Answer-Allosterically activates phosphofructokinase-1 by
preventing allosteric inhibitors frombinding to the enzyme
Glycogen synthase a is: - Answer-unphosphorylated and active
Pyruvate kinase and Pyruvate carboxylase are both regulated by: - Answer-Acetyl-CoA
Lactate dehydrogenase: - Answer-Regenerates NAD+ so that the glycolytic enzyme
glyceraldehyde-3-phosphatedehydrogenase can continue to catalyze its substrate
The tricarboxylic acid (TCA, Kreb's, Citric Acid) cycle is found in: - Answer-Mitochondria
The primary regulated step of the tricarboxylic acid (TCA, Kreb's, Citric Acid) cycle is: -
Answer-Citrate synthase
The tricarboxylic acid TCA, Kreb's, Citric Acid) cycle generates one FADH2 per cycle.
The correct order of electron flow from this FADH2 to O2 is: - Answer-Complex II →
CoQ → Complex III → Cyt C → Complex IV → O2
The respiratory complex that transfers electrons from NADH to CoQ is: - Answer-
Complex I
Complex II pumps ___ electrons into the mitochondrial intermembrane space per
FADH2 - Answer-0
In the Liver, electrons from cytoplasmic NADH are transported into the mitochondria via:
- Answer-Malate/Aspartate shuttle
The site of ATP synthesis in Complex V (or ATP synthase or F0F1 complex) is: -
Answer-αβ-subunits
The regulated step of triacylglycerol biosynthesis is: - Answer-Glycerol-3-phosphate
acyltransferase
Acetyl-CoA used to synthesize fatty acids: - Answer-is generated in the cytoplasm by
ATP citrate lyase
______ is the last common intermediate of triacylglycerol biosynthesis and all
glycerophospholipid biosynthesis - Answer-Phosphatidic acid
