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.

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

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