Glycogen is converted to glucose to provide energy during exercise. Which option best describes this role?

Prepare for the IGCSE Physical Education Exam with engaging quizzes, detailed explanations, and comprehensive flashcards. Enhance your knowledge and boost your confidence for the big day!

Multiple Choice

Glycogen is converted to glucose to provide energy during exercise. Which option best describes this role?

Explanation:
Energy supply during exercise from stored carbohydrate is provided by glycogen being broken down into glucose. When energy demand rises, glycogen from muscles (and liver) is converted to glucose-6-phosphate and enters glycolysis to produce ATP, the molecule that powers muscle contraction. This makes glycogen a rapid source of energy, which is exactly what the role describes. It isn’t about storing energy as fat, excreting waste, or building muscle, which involve different processes.

Energy supply during exercise from stored carbohydrate is provided by glycogen being broken down into glucose. When energy demand rises, glycogen from muscles (and liver) is converted to glucose-6-phosphate and enters glycolysis to produce ATP, the molecule that powers muscle contraction. This makes glycogen a rapid source of energy, which is exactly what the role describes. It isn’t about storing energy as fat, excreting waste, or building muscle, which involve different processes.

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