Energy systems

Question 1

EQ. Explain why ATP plays a major role in the performance of a smash in badminton. (2 marks)

Answer 1

• ATP breakdown produces energy immediately

- ATP breakdown produces energy for powerful movements

Question 2

EQ. Explain what the energy continuum is and justify the position of one sporting activity on the energy continuum. (4 marks)

Answer 2

• relative contribution of each energy system
• depending of intensity and duration
• a 100m sprinter would use predominantly the lactic acid system
• this is because they work at a very high intensity and respire anaerobically

Question 3

EQ. Describe the glycolytic (lactic acid) system. (4 marks)

Answer 3

• it is anaerobic, without oxygen
• occurs in the sarcoplasm of muscle cell
• glucose to pyruvate
• via PFK
• pyruvate to lactate via LDH
• net gain of 2 ATP are produced

Question 4

Identify the energy system used in a gymnastic vault?

Answer 4

ATP-PC

Question 5

Identify the energy system used in a 100m freestyle swim completed in 50 seconds?

Answer 5

lactic acid

Question 6

Identify the energy system used in a marathon?

Answer 6

aerobic

Question 7

State one enzyme that is active when the ATP-PC system is in use

Answer 7

creatine kinase

Question 8

State one enzyme that is active when the aerobic system is in use

Answer 8

ATPase

Question 9

State one enzyme that is active when the lactic acid system is in use

Answer 9

GPP