6.9 Knowledge Check

1. What is the primary function of ATP in the human body?
   • Transports oxygen to muscles
   • Provides energy for muscle contraction and bodily functions
   • Stores glycogen in muscle tissue
   • Converts fat into carbohydrates
2. Which energy system is used for very short bursts of high-intensity activity, such as a 100m sprint?
   • Glycolysis
   • Aerobic metabolism
   • ATP-CP (Phosphagen) system
   • Electron Transport Chain
3. What is a byproduct of glycolysis when oxygen is limited?
   • Creatine phosphate
   • Glucose
   • Lactic acid (lactate)
   • Carbon dioxide
4. Which energy system supports prolonged, moderate-intensity activities like marathon running?
   • ATP-CP system
   • Glycolysis
   • Aerobic metabolism (cellular respiration)
   • Anaerobic threshold system
5. What does the principle of progressive overload state?
   • Training should stop once the goal is reached
   • Training stress must increase over time for continued improvement
   • Exercise should be avoided if it becomes uncomfortable
   • Only strength training improves fitness
6. Type 1 muscle fibres are best suited for which kind of activity?
   • Long-duration aerobic activities like distance running
   • High-intensity, short-duration activities like sprinting
   • Powerlifting competitions
   • Static flexibility exercises
7. According to the principle of individuality, which of the following is true?
   • Everyone benefits most from the same workout plan
   • Physical training is only suitable for elite athletes
   • Physical improvements are entirely genetic
   • Training should be tailored to each person’s unique needs and conditions

Correct Answers:

1. Provides energy for muscle contraction and bodily functions
2. ATP-CP (Phosphagen) system
3. Lactic acid (lactate)
4. Aerobic metabolism (cellular respiration)
5. Training stress must increase over time for continued improvement
6. Long-duration aerobic activities like distance running
7. Training should be tailored to each person’s unique needs and conditions