Unit 3 AOS 2

The anaerobic glycolysis system of providing energy:

(Cambridge Checkpoints 2019).

• uses only carbohydrates

• is associated with submaximal exercise.

• produces relatively few ATP molecules.

• is activated two minutes after the onset of maximal exercise.

Which fuel produces the largest amount of energy per molecule? (VCAA 2016 Exam).

• Triglycerides

• Blood glucose

• Muscle glycogen

• Stored ATP and PC

The relative contributions of carbohydrates and fat as fuel for exercise change as exercise intensity increases. As intensity increases, the contribution of (VCAA 2015 Exam).

• Carbohydrates and fat will stay the same

• Carbohydrate will increase and the contribution of fat will decrease.

• Carbohydrate will decrease and the contribution of fat will increase.

• Carbohydrate and fat will decrease, and the contribution of creatine will increase.

Fats are the primary fuel source of energy at: (VCAA 2016 Exam)

• 60% of VO2 max.

• 70% of VO2 max.
  

• 80% of VO2 max.
  

• 90% of VO2 max.

The ATP-PC energy system produces energy at a: (VCAA 2013 Exam)

• Slow rate with a low yield

• Slow rate with a high yield

• Fast rate with a low yield.

• Fast rate with a high yield.

The aerobic system provides ATP during recovery. Which food fuel would be the main contributor to ATP production during extended rest periods?

• Lipids

• Protein

• Creatine

• Carbohydrates

Which one of the above shows the correct information about the fuels used in ATP production.

• A

• B

• C

• D

A subject has been pedalling on a bicycle ergometer at 60% of his aerobic capacity for 60 minutes. If he continued to exercise at the same workload for a further 30 minutes, the energy supply would come preferentially from fats rather than carbohydrates because: (Cambridge Checkpoints 2019)

• Lactic Acid could be accumulated at a greater rate.

• More ATP would be formed per molecule of fat.

• Glycogen reserves would be in limited supply.

• There would be large reserves of body protein to supply ATP.

Carbohydrates are an important nutrient in energy production. Name two food rich in carbohydrates.

When comparing glycogen and fats, which requires more oxygen to produce the same amount of ATP?