12PE | U3/4 Revision - PeakPhysEd Exam Buster MCQs (Part 1)

A surfer will remain balanced when she:

• Leans into the breaking wave

• Increases the mass of the surfboard she uses

• Keeps her centre of gravity above her feet

• Lowers her centre of gravity closer to the board

At rest, most of our energy comes from:

• Fats

• Carbohydrates

• Proteins

• A combination of all of the above

The energy system interplay is best described when:

• ATP is released from the ATP-PC system, then the LA system and lastly the aerobic system

• ATP is released from all 3 energy systems, but one contributing more than the other two systems

• The three energy systems are used during play rather than rest

• The three energy systems collectively supply ATP to working muscles in a sequential pattern

Once LIP is exceeded, the following occurs:

• The Anaerobic Glycolysis system becomes the major energy supplier

• The PC system is able to replenish energy stores now that it is not being used and “rested”

• Most ATP resynthesis occurs as a result of anaerobic glycolysis

• An active recovery should commence immediately

In order to pitch a baseball with maximal speed, the pitcher should:

• Take a large wind-up using larger body parts and continue with a follow through using smaller body parts

• Ensure that lighter body parts transfer momentum to heavier body parts

• Create as much angular momentum as possible

• Fully extend his arm at point of release

When a coach uses a modified “2 on 2 drill” at hockey training, this is an example of which type of constraint:

• Individual

• Environmental

• Task

• Possessional

Steady state occurs when:

• Oxygen consumption reaches a maximum level

• The Cori cycle starts to break down built up lactic acid and convert it to glycogen to be reused

• The heart and lungs have had sufficient time to supply working muscles with oxygen

• Oxygen supply is equal to oxygen demand

The most likely cause of fatigue for a 100m sprinter (athletics) is:

• PC depletion

• Lowered muscle ph levels

• Accumulation of iron(s) – Fe, Ph, Al, etc.

• Lactic Acid accumulation

Following a 10 second interval sprint (max intensity) how long would it take to replenish most of the fuel stores used in the work period?

• 10 seconds (1:1 work:rest ratio)

• 180 seconds

• 240 seconds

• 300 seconds

Males exhibit greater muscular strength than females due to:

• Greater participation in physical activity

• Having more unipennate muscles

• Having a higher percentage of fast-twitch fibres

• Having increased cross-sectional area of muscle