Question

The excitation, contraction, and relaxation of skeletal muscle require the use of ATP. Because only limited stores of ATP are immediately available in muscle tissue, ATP must be continually supplied if contractile activity is to continue.

Depending on the type of movement or exercise, one or more pathways can be used to provide the most efficient way of supplying the ATP.

TON AYLO NTERTAIN EAST

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For example, an ice hockey player who engages in repeated bouts of high intensity, fast skating maneuvers will need ...

a.short burst

b. a sustained source of ATP.

As a result, ice hockey players will typically use   respiration during a game.

a. abaerobic

b. aerobic

It might also be the case that this ice hockey player will take creatine supplements to boost his performance. Why might this be so? Check all that apply.

a.Eating more creatine leads to more creatine phosphate stores in muscles, which then equates to larger energy stores available for short, explosive bouts of energy use.

b.Creatine in the blood allows the body to absorb more oxygen, which helps to fuel ATP production in the muscle cells.

c.Creatine increases the speed with which neural signals reach the muscle.

d. Unlike oxidative phosphorylation, ATP can be formed within a fraction of a second from creatine phosphate sources, since only one enzymatic reaction is involved in this energy transfer.

Answer 1

Answer d

Exercise at maximum intensity requires more ATP per second than your body can produce it.

Creatine supplements increase body's stores of phosphocreatine, which is utilised to produce new ATP during high-intensity exercise .In short creatine provides additional ATP which is essential for strength and power based activities.