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BIO 202 PhysioEx Lab Report Exercise 10: Acid-Base Balance Activity 2: Rebreathing

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PhysioEx Lab Report Exercise 10: Acid-Base Balance Activity 2: Rebreathing Name: Morris Date: 20 February 2026 Session ID: Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1 In cases of acidosis, the pH of the blood is You correctly answered: less than 7.35. 2 Carbon dioxide and water form You correctly answered: carbonic acid (a weak acid). 3 Which of the following is true of respiratory acidosis? You correctly answered: The amount of carbon dioxide in the blood is greater than normal. 4 Rebreathing You correctly answered: is exemplified by breathing into a paper bag. Experiment Results Predict Question 1 Predict Question: What do you think will happen to the pH and PCO2 levels during rebreathing? Your answer: pH will decrease and PCO2 will increase.

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2/20/26, 2:22 PM PhysioEx Exercise 10 Activity 2



PhysioEx Lab Report
Exercise 10: Acid-Base Balance
Activity 2: Rebreathing
Name: Morris
Date: 20 February 2026
Session ID:

Pre-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.

1 In cases of acidosis, the pH of the blood is

You correctly answered: less than 7.35.

2 Carbon dioxide and water form

You correctly answered: carbonic acid (a weak acid).

3 Which of the following is true of respiratory acidosis?

You correctly answered: The amount of carbon dioxide in the blood is greater than normal.

4 Rebreathing

You correctly answered: is exemplified by breathing into a paper bag.


Experiment Results
Predict Question

1 Predict Question: What do you think will happen to the pH and PCO2 levels during
rebreathing?

Your answer: pH will decrease and PCO2 will increase.

Stop & Think Question

1 Which of the following can cause respiratory acidosis?

You correctly answered: airway obstruction.

Experiment Data
Condition Min. PCO2 Max. PCO2 Min. pH Max. pH
(mm Hg) (mm Hg)
Normal 40 40 7.39 7.39

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