Exploring Gas Measurements in Cell Respiration

What are the two types of sensors used in the cell respiration experiment?

• CO2 and O2 gas sensors

• Temperature and humidity sensors

• Pressure and light sensors

• pH and salinity sensors

How long does it take to perform the cell respiration experiment using the described method?

• 5 minutes

• 30 minutes

• 1 hour

• 10 minutes

How many peas should be measured out and placed in the respiration chamber?

• 10 to 15

• 20 to 25

• 30 to 35

• 5 to 10

Where should the CO2 gas sensor be placed in the biochamber?

• At the bottom of the biochamber

• At the top of the biochamber

• In the middle of the biochamber

• In the neck of the biochamber

What units does the CO2 gas sensor measure in?

• Parts per million

• Grams per liter

• Percent CO2

• Parts per billion

What is the warm-up period for the CO2 gas sensor?

• 30 seconds

• 90 seconds

• 120 seconds

• 60 seconds

What should be done after data collection is finished?

• Leave the sensors in the biochamber

• Remove the sensors and pour out the peas

• Turn off the sensors

• Restart the experiment

How is the rate of CO2 production determined?

• By fitting a linear fit to the CO2 graph

• By observing the color change

• By counting the number of peas

• By measuring the temperature change

What is the purpose of flushing out the bottle with water after the experiment?

• To remove any remaining CO2

• To clean the sensors

• To measure the water content

• To cool down the peas

What variations can be investigated in this experiment?

• Effect of water pH

• Effect of soil type

• Effect of temperature and number of peas

• Effect of light intensity