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Cellular respiration
Question | Answer |
---|---|
Cellular respiration | the chemical process in which food (usually glucose) is broken down to release energy (ATP - adenosine triphosphate) |
energy produced | 60% heat 40% atp |
equation | C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O |
Adenosine Triphosphate | a molecule that stores energy in cells. The energy is stored in the bond between the end phosphate group & the rest of the molecule |
ATP: is composed of | • adenosine (nucleic acid basee adenine & sugar ribose) • 3x phosphate group • Formed by inorganic phosphate group joining ADP (adenosine diphosphate |
Atp uses | • Muscle contraction • Active transport • Synthesis of large molecules • Transmission of nerve impulses • Cell division and movement • Cellular activities • Maintain body temperature |
• Aerobic respiration | oxygen is used to break down glucose into CO2 & H2O everyday energy glycolysis, Krebs cycle, Electron transport system |
glycolysis | cytoplasm, no oxygen needed, yields 2 atp, produces pyruvic (acid?) |
Krebs cycle | mitochondria, needs oxygen, produce CO2, yield 2 atp |
Electron transport system | mitochondria, needs oxygen, produce H2O, yield 34 atp |
Anaerobic respiration | : no oxygen needed to perform respiration (ATP still produced) emergency energy - causes cramps glycolysis, anaerobic respiration |
~anaerobic respiration~ | cytoplasm, no oxygen, lactic acid, 0 atp (pyruvic → lactic) |