Biochemistry Quiz#25 Glycogen Metabolism

1. During vigorous exercise, skeletal muscle cells primarily rely on which of the following enzymes for the rapid mobilization of glucose from glycogen? 

Question 1 of 5

2. Which of the following best describes the role of glucose-6-phosphatase in hepatocytes? 

Question 2 of 5

3. A 20-year-old man presents with muscle cramps and exercise intolerance. Laboratory findings show a normal lactate level before and after exercise, which is atypical as lactate is expected to rise post-exercise. A muscle biopsy reveals excessive amounts of glycogen. Which enzyme deficiency is most likely responsible for these findings? 

Question 3 of 5

4. A 3-year-old child is brought to the pediatrician with a protruding abdomen, failure to thrive, and hypoglycemia. A liver biopsy indicates excessive accumulation of glycogen. Which enzyme deficiency is most likely responsible for this child's condition? 

Question 4 of 5

5. A 6-month-old infant presents with cardiomegaly, hypotonia, and progressive muscle weakness. Laboratory tests reveal elevated creatine kinase (CK) levels. A muscle biopsy shows lysosomal accumulation of glycogen. Which enzyme deficiency is most likely responsible for this infant's symptoms? 

Question 5 of 5


 

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