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biology chapter 8 (enzymes (catalysis in the enzyme's active site…
biology chapter 8
enzymes
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enzyme inhibitors
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non competitive -impede reactions from another part of enzyme, causes enzyme to change its shape
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cellular respiration
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indermediate
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the 1carbon molecule and oxygen become CO2, which exits the cell as waste (anabolic/endergonic
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required info
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goal is to release the energy stored in the bonds of glucose as ATP. Results in a a negative change in Gibbs free energy
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ATP and free energy
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rebuilding ATP -endergonic, built from ADP and inorganic phosphate, uses up energy
ATP -Adenine, ribose, and three phosphate groups
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the negative charges of the phosphate groups makes ATP unstable, like a coiled spring
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photosynthesis
light reactions
photosystem 2
absorbs light and H2O, light is used to break H2O
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required info
catabolic/exergonic, increase in enthalpy
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light+H2O->2H+, and 2electrons and oxygen
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photosystem 1
uses light to charge up electrons, passes them to NADP+ reductions
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ATP synthase
allows H+ to cross the concentration gradient, making ATP in the process
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dark reactions -make half a sugar, two cycles make 1 glucose
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required info
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goal is to turn CO2 into sugar, resulting in positive change in gibbs free energy
3CO2, 9ATP and 6NADH -> G3P
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Rubisco attaches CO2 to RuBF, producing 6PGA
required info
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catabolic/exergonic, increase in enthalpy
free energy change
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free energy -the portion of a systems energy that can do work with constant temperature and pressure
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