PE test questions

Question 1

explain the principle of a couples reaction using the ATP/PC energy system as your example

Answer 1

• the products are fuel for starting another reaction = this is a linked reaction
• 1st reaction is an exothermic reaction where PC is broken down to form energy
• e..g PC –> P + C + energy
• 2nd reaction is an endothermic reaction where the energy created in the 1st reaction is used to form the products
• e.g. energy + ADP + P –> ATP

Question 2

explain two extrinsic risk factors that may cause injury in sport or physical exercise

Answer 2

e.g. poor technique when deadlifting/ rugby tackle
e.g. incorrect equipment e.g. shinpads = hockey - hockey stick/ ball hits shin, helmet = cricket improper vision
e.g. clothing - wearing suitable trainers to prevent sprained ankle
e.g. inappropriate overload = ego lift, too many weights
e.g. overuse injuries - tennis elbow

Question 3

analyse the changes in the mechanics of breathing as exercise increases which would enhance the performance of an endurance swimmer