5 Questions
Which macronutrient provides over two times the energy of carbohydrates?
Fats
What is the primary function of proteins in the body?
Cell repair and muscle recovery
Where are carbohydrates broken down into glucose for energy production?
Liver
What is the main reason for athletes to load on carbohydrates?
Energy needs
Why is it essential for caloric intake to match calories burned?
To maintain weight
Study Notes
- Topic: Diet and energy sources in the context of Cambridge IGCSE PE exam
- Macronutrients: Carbohydrates, fats, proteins, and water are essential for the body's functions and energy production
- Carbohydrates: Found in fruits, grains, and vegetables, broken down into glucose for energy through respiration
- Fats: Rich energy source, providing over two times the energy of carbohydrates, can be stored for later use
- Proteins: Building blocks of life, crucial for cell repair and muscle recovery, found in meat, dairy, beans, etc.
- Water: Important for waste removal, temperature regulation, blood composition, found in various food sources
- Energy balance: Caloric intake should match calories burned to maintain weight, excess calories stored as fat
- Sporting context: Athletes adjust macronutrient intake for energy needs, endurance athletes load on carbohydrates, protein for muscle repair, hydration for endurance and performance
This quiz covers essential macronutrients like carbohydrates, fats, proteins, and water in the context of energy production and maintaining energy balance. It also discusses how athletes adjust their macronutrient intake for energy needs in sports.
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