Unit 1 : Energy Systems In muscle cells
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How does lactate metabolism lead to an oxygen debt ?
During strenuous exercise the oxygen from the bloodstream is not enough, resulting in pyruvate converting to lactate. As lactate builds up so too does an oxygen debt
What negative effect does the oxygen debt have on the person?
It causes fatigue
What happens if the oxygen debt is repaid?
The oxygen is converted back to pyruvate and enters the aerobic pathway
True or False ? In order to produce lactate the hydrogen from the NADH is produced during glycolysis is transferred to pyruvate
True
State 3 differences between slow and fast twitch muscle cells
• slow : the muscle contractions are slower in comparison to fast ( but fast can’t maintain this for as long as slow) • Fast Twitch uses glycolysis while slow used Aerobic Respiration • the storage fuel for slow twitch is fats while fast is glycogen • Fast twitch has fewer mitochondria that slow
What type of activities require fast twitch muscle cells?
• Weightlifting • Sprinting