effect of temperature and substrate concentration
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9 Terms
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redox indicator
changes colour when a substance is reduced or oxidised
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DCPIP and methyl blue
redox indicators used to monitor respiration in yeast cells without damaging them
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colour change
blue to colourless
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reduction
taking up of H+ ions causes colour change
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rate of colour change
directly proportional to rate of respiration
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rate of respiration
inversely proportional to time
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investigating temperature
using a waterbath to change temperature and measure the time taken for colour change
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investigating concentration
measure the time taken for colour change at different glucose concentrations
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control variables
volume of dye and yeast…type and concentration of substrate
Note 
Flashcards (66)