Variables affecting/measuring cell respiration

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6 Terms

1
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how can rate of respiration be determined from measruements

  • oxygen up take

  • carbon dioxide production

  • composition of glucose or other respirating substrates

2
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rate or respiration (reminder)

amount of product (or substrate consumed) over time

3
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how could cell respiration be measured

  • amount of oxygen cosumed'; use of a simple respirometer

  • amount of CO2 released (displacement methods/using CO2 sensors)

  • substrate consumed

4
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what is a respirometer

a simple device used to measure respiration rate

5
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what does the respirometer usually involve

  • sealed glass container, where the organism is placed

  • substrate which absorbs CO2 produced by cell respiration

  • a capillary tube containing fluid allowing changes in pressure to be monitored

6
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which factors affecting cellular respiration could be investigated

  • type of organism

  • effect of temp

  • no. of organisms in a sample

  • size of organism