Mcqs glycogenesis

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What is glycogenesis?

a. The breakdown of glycogen to glucose

b. The synthesis of glucose from non-carbohydrate precursors

c. The synthesis of glycogen from glucose

d. The breakdown of glucose to pyruvate

Answer: c

 

Where does glycogenesis primarily occur in the body?

a. Kidneys

b. Pancreas

c. Liver and muscles

d. Small intestine

Answer: c

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Which enzyme converts glucose to glucose-6-phosphate?

a. Glycogen synthase

b. Hexokinase

c. Phosphoglucomutase

d. UDP-glucose pyrophosphorylase

Answer: b

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What is the immediate precursor for glycogen synthesis?

a. Glucose-6-phosphate

b. Glucose-1-phosphate

c. UDP-glucose

d. Fructose-6-phosphate

Answer: c

 

What enzyme catalyzes the addition of glucose molecules to the glycogen chain?

a. Glycogen synthase

b. Hexokinase

c. Phosphoglucomutase

d. UDP-glucose pyrophosphorylase

Answer: a

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What enzyme catalyzes the formation of branches in the glycogen chain?

a. Glycogen synthase

b. Hexokinase

c. Phosphoglucomutase

d. Glycogen branching enzyme

Answer: d

 

Which hormone promotes glycogen synthesis?

a. Insulin

b. Glucagon

c. Epinephrine

d. Cortisol

Answer: a

 

Which enzyme does insulin stimulate to promote glycogen synthesis?

a. Glycogen synthase

b. Glycogen phosphorylase

c. UDP-glucose pyrophosphorylase

d. Phosphoglucomutase

Answer: a

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Which hormone promotes glycogen breakdown?

a. Insulin

b. Glucagon

c. Epinephrine

d. Cortisol

Answer: b

 

Which enzyme does glucagon stimulate to promote glycogen breakdown?

a. Glycogen synthase

b. Glycogen phosphorylase

c. UDP-glucose pyrophosphorylase

d. Phosphoglucomutase

Answer: b

 

Where is glycogen stored in the liver?

a. Nucleus

b. Mitochondria

c. Cytoplasm

d. Endoplasmic reticulum

Answer: c

 

Where is glycogen stored in muscle cells?

a. Nucleus

b. Mitochondria

c. Sarcoplasm

d. Endoplasmic reticulum

Answer: c

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What is the role of glycogen in blood glucose regulation?

a. To lower blood glucose levels

b. To maintain blood glucose levels

c. To increase blood glucose levels

d. To regulate blood pressure

Answer: b

 

What is the role of glycogen in energy production?

a. To store excess glucose as fat

b. To generate ATP for energy production

c. To break down fat for energy production

d. To synthesize amino acids for protein production

Answer: b

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Which of the following hormones stimulates gluconeogenesis?

a. Insulin

b. Glucagon

c. Epinephrine

d. Cortisol

Answer: b