Respiration

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Combustion

fuel + oxygen -> carbon dioxide + water (+energy)

  • occurs at high temperatures
  • other products such as carbon dioxide and suet are made
  • uses oxidation and reduction
  • exothermic reaction
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aerobic respiration

glucose + oxygen -> carbon dioxide +water(+energy)

C6H12O6 + 6O2 -> 6CO2 + 6H2O

  • occurs at lower temperatures
  • uses enzymes
  • produces 38 ATP
  • uses oxidation and reduction
  • exothermic reaction

 

 

 

 

 

 

 

 

 

 

 

 

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why is respiration important?

  • sperm cell motility
  • muscle contraction
  • nerve impulse transmission
  • uptake of ions (active transport)
  • it provides us with energy!
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what do we need to remove quicky in the blood?

  • lactic acid- remove by continually breathing in oxygen (oxygen debt)
  • carbon dioxide- carbon acid in blood, breathe out
  • heat- removed by sweating
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what can we measure in the blood?

  • oxygen
  • breathing rate- how many and how deep
  • carbon dioxide
  • heart rate- ECG, pulse
  • lactic acid
  • glucose
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ATP

ATP -> ADP + phosphate + energy

  • ATP (energy currency) of the cell -> 2 sec
  • Anaerobic respiration -> 20 sec
  • Aerobic respiration -> long distance
  • Creatine phosphatase -> 8 sec

 

 

 

 

 

 

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Aerobic and Anaerobic respiration

Aerobic respiration- takes place in the mitochondria

  • glucose + oxygen ->carbon dioxide + water + 38 ATP

Anaerobic respiration- takes place in the cytoplasm in the cell

  • glucose -> lactic acid + 2 ATP

 

 

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what happens to lactate?

  • when oxygen is again available, lactic acid is converted back into pyruvate and then may enter the aerobic respiration cycle
  • this takes place in the liver
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respiration in muscle cells

aerobic respiration-

glucose -> pyruvate -> carbon dioxide + water

            2ATP                                36ATP

 

anaerobic respiration-

glucose -> pyruvate -> lactic acid (lactate)

          2ATP

 

 

 

 

 

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