Respiration Bench

Set up the flask

Sugar added grams

Seal controls oxygen

Water temperature

Ready to run

The 30-minute trial is compressed to about 1.5 seconds. A delivery tube carries gas into limewater, so carbon dioxide is detected whether the flask is open or sealed.

Readings after 30 minutes

Balloon circumference—

Bubbles per minute—

Limewater—

Ethanol in liquid—

ATP per glucose—

Is this anaerobic?

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Set up the plant

Light

Container controls oxygen

Soil water

Time elapsed 24 h

The apparatus picture updates immediately to show the selected light and whether the plant is open to air or sealed.

Readings

Oxygen inside container—

Carbon dioxide—

Limewater—

Leaf tips—

Growth—

Is this anaerobic?

—

Open containers hold steady at 21% oxygen and 400 ppm carbon dioxide, because room air keeps replacing what the plant uses and removing what it makes.

Set up the run

Intensity percent of max effort

Time exercising 10.0 min

Ready to run

Readings at this moment

Energy from anaerobic—

Energy from aerobic—

Blood lactic acid—

Crossover point—

Which pathway is supplying most energy?

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Time	Anaerobic	Aerobic