Take a break

Which of the following statements is true regarding glycogenesis?

• a) It is the breakdown of glycogen into glucose.
• b) It is the synthesis of glucose from non-carbohydrate sources.
• c) It is the synthesis of glycogen from glucose.
• d) It occurs primarily in the kidneys.

Which enzyme is responsible for the synthesis of glycogen during glycogenesis?

• a) Glucose-6-phosphatase
• b) Glucagon
• c) Glycogen phosphorylase
• d) Glycogen synthase

Which hormone stimulates glycogenolysis?

• a) Insulin
• b) Glucagon
• c) Leptin
• d) Adiponectin

Which of the following is NOT a product of glycogenolysis?

• a) Glucose
• b) Pyruvate
• c) ATP
• d) Lactate

During glycogenolysis, which enzyme catalyzes the breakdown of glycogen into glucose-1-phosphate?

• a) Glucose-6-phosphatase
• b) Glucagon
• c) Glycogen phosphorylase
• d) Glycogen synthase

Where is glycogen primarily stored in the body?

• a) Muscle tissue
• b) Adipose tissue
• c) Liver tissue
• d) Bone tissue

Which of the following is a characteristic of glycogen?

• a) It is a polymer of fructose molecules.
• b) It is a highly branched polymer of glucose molecules.
• c) It is a monomer of glucose molecules.
• d) It is a linear polymer of glucose molecules.

How does insulin affect glycogenolysis and glycogenesis?

• a) Insulin stimulates glycogenolysis and inhibits glycogenesis.
• b) Insulin inhibits glycogenolysis and stimulates glycogenesis.
• c) Insulin stimulates both glycogenolysis and glycogenesis.
• d) Insulin inhibits both glycogenolysis and glycogenesis.

Which of the following is a consequence of defects in glycogen metabolism?

• a) Low blood sugar levels
• b) High blood sugar levels
• c) Abnormal accumulation of glycogen in tissues
• d) Increased glucose uptake by the liver

Which of the following is a common symptom of glycogen storage diseases?

• a) Hypoglycemia
• b) Hyperglycemia
• c) Hematuria
• d) Bradycardia