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Questions and Answers
What is the principle on which respirometers work?
What is the principle on which respirometers work?
What is the function of potassium hydroxide in respirometers?
What is the function of potassium hydroxide in respirometers?
What is the byproduct of fermentation of glucose?
What is the byproduct of fermentation of glucose?
What is the difference in ATP yield between fermentation and aerobic respiration?
What is the difference in ATP yield between fermentation and aerobic respiration?
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What happens to the Krebs cycle and link reaction if there is no oxygen present?
What happens to the Krebs cycle and link reaction if there is no oxygen present?
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What is the rate of respiration measured by?
What is the rate of respiration measured by?
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What other respiratory substrates can be used besides glucose?
What other respiratory substrates can be used besides glucose?
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Study Notes
Respirometers, Fermentation, and Investigation of Respiration
- Respirometers work on the principle that oxygen is used in aerobic respiration and carbon dioxide is produced.
- The volume of oxygen used is equal to the volume of carbon dioxide produced.
- Potassium hydroxide is used to absorb CO2, leading to a reduction in volume inside the respirometer.
- Water enters the pipette, and the volume of H2O entering equals the volume of O2 used up.
- The rate of respiration can be measured by determining how much O2 is used in a given time and calculating a rate per minute.
- If there is no oxygen present, oxidative phosphorylation will not occur, and the Krebs cycle and link reaction will come to a halt.
- Glycolysis can continue because reduced NAD can be regenerated anaerobically.
- Fermentation of glucose supplies extra energy during exercise but only yields two molecules of ATP per molecule of glucose.
- Lactate is formed during fermentation and can be used to regenerate glucose or metabolized as an energy source by the liver.
- Other organisms produce different fermentation products used in various industries.
- Investigation of respiration can be done using basic equipment or sophisticated electronically monitored fermenters.
- Lipids and proteins can also be used as respiratory substrates, and their metabolism converges on the Krebs cycle.
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Description
Test your knowledge on respirometers, fermentation, and the investigation of respiration with this informative quiz. Learn about the principles behind respirometers, how to measure the rate of respiration, and the effects of oxygen on the Krebs cycle and link reaction. Discover the role of fermentation in supplying extra energy during exercise and the different fermentation products used in various industries. Whether you are a biology student or simply curious about cellular respiration, this quiz will challenge and educate you.
