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- 1. Multiple Choice
What is the purpose of the soda lime in this lab?absorbs oxygenabsorbs carbon dioxidefacilitates respirationkeeps the temperature regulated - 2. Multiple ChoiceWhat do we call this lab set up?a barometera respirometera manometera spirometer
- 3. Multiple ChoiceWhat is the purpose of the cotton wool?to stop the maggots touching the soda limeto keep the oxygen in the space above the maggotsto insulate the maggots from the coldto keep the boiling tube bright
- 4. Multiple ChoiceWhy is the tube to the right in the boiling tube sealed?To allow gases to enter and exit the respirometerTo stop gases entering and exiting the respirometerTo keep the maggots warmThere is no reason to seal that tube
- 5. Multiple ChoiceWhat do you expect to see happen?The liquid in the manometer will move UP the rulerThe liquid in the manometer will move DOWN the rulerThe liquid in the manometer will NOT moveThe liquid in the manometer will move UP and DOWN the ruler
- 6. Multiple ChoiceWhich best describes cellular respiration?the controlled release of energy from organic compounds to produce ATPthe controlled releases of energy from inorganic compounds to produce ATPthe controlled release of energy from organic compounds to produce ADPthe controlled release of energy from inorganic compounds to produce ADP
- 7. Multiple Choice
When investigating the effect of temperature on the rate of respiration, why do you need tube Q with glass beads?
To make sure it is a fair test - the volume of glass beads needs to be the same as the volume of soda lime
It is a control variable - it allows you to see what happens without the soda lime
It is a control - changes in temperature could also cause the bubble to move and this allows you to take that into account
Glass beads have a high specific heat capacity so it makes it easier to maintain a constant temperature in the tubes
- 8. Multiple Choice
Which of the following is a true statement based on the data?
The amount of oxygen consumed by germinating corn at 22°C is approximately twice the amount of oxygen consumed by germinating corn at 12°C.
The rate of oxygen consumption is the same in both germinating and nongerminating corn during the initial time period from 0 to 5 minutes.
The rate of oxygen consumption in the germinating corn at 12°C at 10 minutes is 0.4 ml O2/minute.
The rate of oxygen consumption is higher for nongerminating corn at 12°C than at 22°C.
If the experiment were run for 30 minutes, the rate of oxygen consumption would decrease.
- 9. Multiple Choice
What is the rate of oxygen consumption in germinating corn at 12°C?
0.08 ml/min
0.04 ml/min
0.8 ml/min
1.00 ml/min
- 10. Multiple Choice
Which of the following conclusions is supported by the data?
The rate of respiration is higher in non-germinating seeds than in germinating seeds.
Non-germinating peas are not alive, and show no difference in rate of respiration at different temperatures.
The rate of respiration in the germinating seeds would have been higher if the experiment were conducted in sunlight.
The rate of respiration increases as the temperature increases in both germinating and non-germinating seeds.
The amount of oxygen consumed could be increased if pea seeds were substituted for corn seeds.
- 11. Multiple Choice
What is the role of KOH in this experiment?
It serves as an electron donor to promote cellular respiration.
As KOH breaks down, the oxygen needed for cellular respiration is released.
It serves as a temporary energy source for the respiring organism.
It binds with carbon dioxide to form a solid, preventing CO2 production from affecting gas volume.
Its attraction for water will cause water to enter the respirometer.
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