17 Questions
Liver glycogen is used in fasting to provide glucose for use by other tissues including the brain. Muscle glycogen is not. What is the explanation for this?
C) Muscle lacks glucose-6-phosphatase.
Which of the following is NOT a function of glucagon?
) Increasing glucose production from fatty acid
) Which of pathway for glycogen breakdown in the liver would prevent the cell from breaking down glycogen in response to EPINEPHRINE
One that causes it to constitutively (constantly) activate Phospholipase C
When glucose enters the beta cell, it is used to produce ATP. The increase in ATP causes an influx of a substance which causes the exocytosis of insulin. What is this substance?
) Ca2+
Which of the following statements regarding glucose is not true?
A high blood glucose concentration is called hypoglycaemia.
Which of the following statements regarding glycogenolysis is not true?
Glycogenolysis helps correct hypoglycaemia.
. Which of the following statements is false about gluconeogenesis?
From the hydrolysis of tri-acyl-glycerol, fatty acids can be used as a carbon source
During gluconeogensis, the three irreversible steps of glycolysis have to be bypassed. Final step is the conversion of glucose-6-P to glucose that is catalyzed by glucose-6- phosphatase. Which of the following statement is true about the reaction step?
Defect in glucose-6-phosphatase leads to abnormal accumulation of glycogen in liver
Which of the following Glucose transporters is Insulin-dependent?
) GLUT4
Which of the following statements about gluconeogenesis is correct?
Gluconeogenesis enables the liver to maintain blood glucose levels during starvation
. In the glycogen synthase reaction, the precursor to glycogen is:
B. UDP-glucose
Which of the following statements is NOT true about the synthesis of glycogen?
glycogen synthase needs to be phosphorylated
Why is glycogen branching important?
Both to increase solubility and to increase faster glycogen breakdown
A defect in branching enzyme
Severe cases will not result in Cirrhosis or death in the very young.
which of the following enzymes is not an irreversible enzyme in glycolysis or gluconeogenesis?
Glycogen synthase in glycolysis
What are the main differences between glycolysis and gluconeogenesis? Which one of the statement is incorrect
Glycogen synthase in glycolysis
Q .What are the main differences between glycolysis and gluconeogenesis? Which of the statement is correct?
a. Glycolysis takes place in all parts of the body whereas gluconeogenesis mainly happens in the liver. Besides glycolysis is stimulated by insulin, is a catabolic process, exergonic, and its final product is pyruvate. On the contrary, gluconeogenesis is anabolic, endergonic, and its final product is glucose
Test your knowledge about glycogen synthesis, gluconeogenesis, and the differences between glycolysis and gluconeogenesis with this quiz. This quiz covers important concepts related to glycogen branching, glycogen precursor, and the accuracy of statements about these metabolic processes.
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