Describe feedback inhibition of What is the role of ATP is used to transfer energy a metabolic pathway dehydrogenase enzymes in in cells. Give one other cellular respiration? use of ATP What part of the respiratory Where in the cell does Describe the role of pathway breaks down glucose glycolysis take place? phosphofructokinase in to form pyruvate? glycolysis What intermediate is formed When acetyl CoA and Give another name for the from pyruvate when oxygen is oxaloacetate combine what do Citric Acid Cycle present in a cell? they form? Where in the cell does the Name 3 chemicals that are Name 2 co-enzymes that can Citric Acid Cycle take place? made or regenerated by the accept hydrogen ions from Citric Acid Cycle dehydrogenase enzymes Where in the cell does the What high energy molecule is What type of ions flow electron transport chain released when NADH and through the membrane take place? FADH2 are oxidised in the protein ATP synthase, causing electron transport chain? it to make ATP? What is the final electron Name 4 substrates for What enzyme in respiration is acceptor in the electron respiration other than sugar inhibited by ATP and citrate? transport chain? molecules State the function of creatine How much time can creatine Under what conditions do phosphate in muscle cells phosphate support strenuous muscles produce lactic acid? muscle activity for? What type of muscle fibres are What type of muscle fibres are Which type of muscle fibre best suited to endurance best suited to produce short contracts more quickly? activities? bursts of activity?
Describe feedback inhibition of a metabolic pathway What is the role of dehydrogenase enzymes in respiration? ATP is used to transfer energy in cells. Give one other cellular use of ATP What part of the respiratory pathway breaks down glucose to form pyruvate? Where in the cell does glycolysis take place? Describe the role of phosphofructokinase in glycolysis What intermediate is formed from pyruvate when oxygen is present in a cell? When acetyl CoA and oxaloacetate combine what do they form? Give another name for the Citric Acid Cycle Where in the cell does the Citric Acid Cycle take place? Name 3 chemicals that are made or regenerated by the Citric Acid Cycle Name 2 co-enzymes that can accept hydrogen ions from dehydrogenase enzymes Where in the cell does the electron transport chain take place? What high energy molecule is released when NADH and FADH2 are oxidised in the electron transport chain? What type of ions flow through the membrane protein ATP synthase, causing it to make ATP? What is the final electron acceptor in the electron transport chain? Name 4 substrates for respiration other than sugar molecules What enzyme in respiration is inhibited by ATP and citrate? State the function of creatine phosphate in muscle cells How much time can creatine phosphate support strenuous muscle activity for? Under what conditions do muscles produce lactic acid? What type of muscle fibres are best suited to endurance activities? What type of muscle fibres are best suited to produce short bursts of activity? Which type of muscle fibre contracts more quickly?