Cellular Respiration.  During photosynthesis the Sun’s energy is captured & stored in the form of carbohydrates & other organic molecules.

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    14-Jan-2016

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Cellular RespirationDuring photosynthesis the Suns energy is captured & stored in the form of carbohydrates & other organic moleculesWhat happens to this stored energy?Most of the stored energy will be used for the life processes of the autotrophSome will be reserved & available to heterotrophs, who in turn, use it for their own life processesAll cells break down complex organic compounds into simpler moleculesCells use some of the energy released to produce ATP from ADP & phosphate RespirationAll cells break down complex organic compounds into simpler moleculesBreaking down releases energy stored in the molecular bonds of the organic compoundsSome of the energy released to produce ATP from ADP & phosphate Organic CompoundsNo OxygenFermentation(anaerobic)OxygenAerobic RespirationATPATPGlycolysisGlycolysis1st phase of cellular respirationProduces ATP & other productsLittle ATP formedOther products will follow one of two additional pathwaysWhich path followed depends on the presence or lack of O2Glycolyisis a biochemical pathway6 carbon chain molecule broken & 2 STP molecules, through a series of steps, into 2 3 carbon molecules (pyruvic acid molecules) AND 4 molecules of ATP2 ATP used & 4 made !Happens in the cytosolWhat happens to the Pyruvic Acid?Depends on whether or not oxygen is presentWhere does respiration happen?In the cytosol if no oxygen is presentWhere does respiration happen?In the mitochondria if oxygen is presentThe Outer MembraneThe outer membrane contains many complexes of integral membrane proteins that form channels through which a variety of molecules and ions move in and out of the mitochondrion. The Inner MembraneForms the inner folds of the cristaeCristaeCristae are the finger-like projections of the inner mitochondrial membrane and they increase the surface area for the electron tranport carriers and ATP synthase which are located in the membrane.The MatrixThe matrix contains a complex mixture of soluble enzymes that catalyze the respiration of pyruvic acid and other small organic molecules.

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