Respiration Investigation

Respiration is part of being alive. We all must do it.

Part 1: The Big Squeeze

You will work with your table group to complete the following investigation. Write your answers on the Respiration Investigation assignment sheet.

Question: How does the length of time a person is continuously doing intense respiration affect the amount of energy that can be used to do work?

Hypothesis: Write your hypothesis on the Respiration Investigation sheet.

Materials:

• Clothespin

• Stopwatch

• Calculator

Procedure:

1. Use your thumb and index finger to open and close the clothespin as fast as you can for 30 seconds. Without stopping, ...

2. Observe, measure and record the number of times you are able to open the clothespin within that 30 second trial. Without stopping, ...

3. Repeat steps 1-2 4 more times - you are doing 5 sets of 30 seconds each. Do not rest between the trials.

4. Repeat steps 1-3 with each member of your group.

Data:

Write your data on the Respiration Investigation assignment sheet.

Graph:

Create a point-line graph on the Respiration Investigation assignment sheet.

Conclusion:

Write your conclusion on the Respiration Investigation assignment sheet.

Respiration Investigation Extension (*): Yeast and Sugar

Complete the Yeast and Sugar Respiration Lab.