Podcast
Questions and Answers
Which enzyme is responsible for the conversion of glycerol into dihydroxyacetone phosphate?
Which enzyme is responsible for the conversion of glycerol into dihydroxyacetone phosphate?
- Debranching enzyme
- Phosphoglucomutase (correct)
- Glycogen phosphorylase
- Glucose-6-phosphatase
What type of bond does glycogen primarily consist of in its structure?
What type of bond does glycogen primarily consist of in its structure?
- Beta 1,4 glycosidic bond
- Alpha 1,4 glycosidic bond (correct)
- Hydrogen bond
- Ester bond
Which enzyme is involved in transferring glucose residues from an a-1,6 linkage to a-1,4 linkage in glycogen?
Which enzyme is involved in transferring glucose residues from an a-1,6 linkage to a-1,4 linkage in glycogen?
- Debranching enzyme (correct)
- Phosphoglucomutase
- Glycogen phosphorylase
- Glucose-6-phosphatase
Which enzyme is essential for the conversion of glucose 6-phosphate into glucose?
Which enzyme is essential for the conversion of glucose 6-phosphate into glucose?
In glycogenolysis, what is the role of glycogen phosphorylase?
In glycogenolysis, what is the role of glycogen phosphorylase?
Which process involves the conversion of glucose 1-phosphate to glucose 6-phosphate for further metabolism?
Which process involves the conversion of glucose 1-phosphate to glucose 6-phosphate for further metabolism?
What enzyme is responsible for cleaving the 1,6-glycosidic bond present in glycogen structure?
What enzyme is responsible for cleaving the 1,6-glycosidic bond present in glycogen structure?
Which enzyme plays a critical role in the events of glycogenolysis?
Which enzyme plays a critical role in the events of glycogenolysis?
What is the primary function of fructose 2,6-bisphosphate in the context of glycolysis and gluconeogenesis?
What is the primary function of fructose 2,6-bisphosphate in the context of glycolysis and gluconeogenesis?
How does insulin affect the formation of fructose 2,6-bisphosphate?
How does insulin affect the formation of fructose 2,6-bisphosphate?
Which enzyme is activated by fructose 2,6-bisphosphate in glycolysis?
Which enzyme is activated by fructose 2,6-bisphosphate in glycolysis?
How does glucagon affect the formation of fructose 2,6-bisphosphate?
How does glucagon affect the formation of fructose 2,6-bisphosphate?
Which process does Fructose 1,6-bisphosphatase stimulate?
Which process does Fructose 1,6-bisphosphatase stimulate?
What is the primary function of the Cori cycle?
What is the primary function of the Cori cycle?
In the glucose alanine cycle, what happens to glucose in muscle tissues?
In the glucose alanine cycle, what happens to glucose in muscle tissues?
Which molecule can be stored as glycogen or return to muscle tissue according to the text?
Which molecule can be stored as glycogen or return to muscle tissue according to the text?
What is the primary function of gluconeogenesis?
What is the primary function of gluconeogenesis?
Which of the following is a source of pyruvate in gluconeogenesis?
Which of the following is a source of pyruvate in gluconeogenesis?
In which organelle does the formation of oxaloacetate take place?
In which organelle does the formation of oxaloacetate take place?
What is the role of ATP in the formation of oxaloacetate?
What is the role of ATP in the formation of oxaloacetate?
What is the purpose of converting oxaloacetate into malate in the mitochondria?
What is the purpose of converting oxaloacetate into malate in the mitochondria?
What is the role of phosphoenolpyruvate carboxykinase in gluconeogenesis?
What is the role of phosphoenolpyruvate carboxykinase in gluconeogenesis?
What is the final step of gluconeogenesis?
What is the final step of gluconeogenesis?
Where is the enzyme glucose 6-phosphatase located?
Where is the enzyme glucose 6-phosphatase located?
What prevents the conversion of glucose 6-phosphate into glucose in muscle tissue?
What prevents the conversion of glucose 6-phosphate into glucose in muscle tissue?
Which hormone is released from adrenal glands during the 'flight or fight' response?
Which hormone is released from adrenal glands during the 'flight or fight' response?
What is the role of Ca2+ in muscle tissue with respect to glycogenolysis?
What is the role of Ca2+ in muscle tissue with respect to glycogenolysis?
What is the role of insulin in the regulation of glycogen synthase?
What is the role of insulin in the regulation of glycogen synthase?
Which hormone triggers the conversion of phosphorylase b to phosphorylase a?
Which hormone triggers the conversion of phosphorylase b to phosphorylase a?
What is the role of the delta subunit of phosphorylase kinase in muscle tissue?
What is the role of the delta subunit of phosphorylase kinase in muscle tissue?
Which process involves the conversion of lactate to pyruvate?
Which process involves the conversion of lactate to pyruvate?
What is the role of glucagon in the regulation of glycogenolysis?
What is the role of glucagon in the regulation of glycogenolysis?
In gluconeogenesis, which enzyme is responsible for the conversion of pyruvate to oxaloacetate?
In gluconeogenesis, which enzyme is responsible for the conversion of pyruvate to oxaloacetate?
Which of the following is NOT an inhibitor of phosphofructokinase?
Which of the following is NOT an inhibitor of phosphofructokinase?
What is the net effect when glycolysis and gluconeogenesis occur simultaneously in the liver?
What is the net effect when glycolysis and gluconeogenesis occur simultaneously in the liver?
Which of the following stimulates the conversion of fructose 6-phosphate to fructose 2,6-bisphosphate?
Which of the following stimulates the conversion of fructose 6-phosphate to fructose 2,6-bisphosphate?
What is the function of glucose 6-phosphatase in gluconeogenesis?
What is the function of glucose 6-phosphatase in gluconeogenesis?
What is the effect of glucagon on glycolysis?
What is the effect of glucagon on glycolysis?
Which of the following is NOT a regulator of gluconeogenesis?
Which of the following is NOT a regulator of gluconeogenesis?
What is the function of phosphoenolpyruvate carboxykinase in gluconeogenesis?
What is the function of phosphoenolpyruvate carboxykinase in gluconeogenesis?
What enzyme is responsible for the breaking down of glycogen?
What enzyme is responsible for the breaking down of glycogen?
What is the main source of glucose for the Cori cycle?
What is the main source of glucose for the Cori cycle?
What is the primary function of the glucose alanine cycle?
What is the primary function of the glucose alanine cycle?
Which enzyme is essential for the generation of glucose from glycerol?
Which enzyme is essential for the generation of glucose from glycerol?
How is phosphorylase b converted into the active form phosphorylase a?
How is phosphorylase b converted into the active form phosphorylase a?
What is the role of calmodulin in muscle glycogen breakdown?
What is the role of calmodulin in muscle glycogen breakdown?
How does insulin contribute to glycogen synthesis?
How does insulin contribute to glycogen synthesis?
What is the conversion process of glucose to glucose 6-phosphate in glycogenesis?
What is the conversion process of glucose to glucose 6-phosphate in glycogenesis?
Which hormone triggers the activation of glycogen phosphorylase for glycogen breakdown?
Which hormone triggers the activation of glycogen phosphorylase for glycogen breakdown?
What hormone stimulates the release of glucose into the blood by promoting glycogen breakdown in the liver?
What hormone stimulates the release of glucose into the blood by promoting glycogen breakdown in the liver?
Glycerol is converted into glucose 6-phosphate without the formation of dihydroxyacetone phosphate.
Glycerol is converted into glucose 6-phosphate without the formation of dihydroxyacetone phosphate.
Glycogen is a linear chain of glucose molecules.
Glycogen is a linear chain of glucose molecules.
Glucose 1-phosphate can be directly converted into glucose 6-phosphate by glycogen phosphorylase.
Glucose 1-phosphate can be directly converted into glucose 6-phosphate by glycogen phosphorylase.
The Cori cycle is a process that involves the conversion of lactate to pyruvate.
The Cori cycle is a process that involves the conversion of lactate to pyruvate.
Gluconeogenesis is the process of generating glucose from non-carbohydrate sources such as glycerol and amino acids.
Gluconeogenesis is the process of generating glucose from non-carbohydrate sources such as glycerol and amino acids.
In gluconeogenesis, the formation of oxaloacetate occurs in the cytoplasm.
In gluconeogenesis, the formation of oxaloacetate occurs in the cytoplasm.
The enzyme glucose 6-phosphatase is present in the mitochondria.
The enzyme glucose 6-phosphatase is present in the mitochondria.
Gluconeogenesis occurs only in the liver.
Gluconeogenesis occurs only in the liver.
Phosphoenolpyruvate carboxykinase is responsible for the formation of malate and mitochondrial exit.
Phosphoenolpyruvate carboxykinase is responsible for the formation of malate and mitochondrial exit.
Gluconeogenesis is the process of breaking down glycogen to glucose.
Gluconeogenesis is the process of breaking down glycogen to glucose.
Muscle cells can directly convert glucose 6-phosphate back into glucose.
Muscle cells can directly convert glucose 6-phosphate back into glucose.
Glycogen synthase is activated by phosphorylation.
Glycogen synthase is activated by phosphorylation.
Glucagon stimulates glycogen synthesis in the liver.
Glucagon stimulates glycogen synthesis in the liver.
Lactate is a direct precursor of glucose in gluconeogenesis.
Lactate is a direct precursor of glucose in gluconeogenesis.
The Cori cycle involves the conversion of lactate from muscle tissue to glucose in the liver.
The Cori cycle involves the conversion of lactate from muscle tissue to glucose in the liver.
Flashcards
Glycerol to DHAP enzyme
Glycerol to DHAP enzyme
The enzyme that converts glycerol into dihydroxyacetone phosphate
Glycogen bond type
Glycogen bond type
Alpha-1,4 glycosidic bonds are the main bonds in glycogen structure
Debranching enzyme function
Debranching enzyme function
Transfers glucose residues from an a-1,6 linkage to an a-1,4 linkage in glycogen
Glucose 6-phosphate to glucose enzyme
Glucose 6-phosphate to glucose enzyme
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Glycogen phosphorylase role
Glycogen phosphorylase role
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Glucose 1-phosphate to glucose 6-phosphate
Glucose 1-phosphate to glucose 6-phosphate
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Fructose 2,6-bisphosphate function
Fructose 2,6-bisphosphate function
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Insulin's effect on F2,6BP
Insulin's effect on F2,6BP
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PFK-1 activator
PFK-1 activator
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Glucagon's effect on F2,6BP
Glucagon's effect on F2,6BP
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Fructose 1,6-bisphosphatase function
Fructose 1,6-bisphosphatase function
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Cori cycle function
Cori cycle function
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Glucose alanine cycle - muscle glucose
Glucose alanine cycle - muscle glucose
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Stored molecule in glycogenolysis
Stored molecule in glycogenolysis
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Gluconeogenesis function
Gluconeogenesis function
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Gluconeogenesis pyruvate source
Gluconeogenesis pyruvate source
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Oxaloacetate formation location
Oxaloacetate formation location
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Oxaloacetate ATP role
Oxaloacetate ATP role
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Oxaloacetate to malate role
Oxaloacetate to malate role
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PEPCK Role
PEPCK Role
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Gluconeogenesis final step
Gluconeogenesis final step
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Glucose 6-phosphatase location
Glucose 6-phosphatase location
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Muscle glucose 6-phosphatase issue
Muscle glucose 6-phosphatase issue
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