B. Carbon Dioxide Production and Respiration
1. For the Control Flask, did the solution change color at the end?
2. Results for Flasks #1-4.
Flask 1 (HCl titration): Drops of HCl required to cause color loss __________
Flask 2 (sitting quietly): Time required to cause color loss __________
Flask 3 (after running): Time required to cause color loss __________
Flask 4 (after one minute rest): Time required to cause color loss __________
In all four flasks, as the solution lost color, its pH was going __________.
Discussion
A. Oxygen Consumption and Respiration
1. Which group of mice (room temp or ice) had a higher rate of O2 consumption? Explain why there is
a difference.
B. Carbon Dioxide Production and Respiration
1. For the Control Flask, explain why the solution did or did not change color. What gas could be
responsible for the color change?
2. Explain why running (i.e. muscle contraction) changed your result from Flask 2 to Flask 3.
