Photo AI
a) Describe an investigation that you have carried out to demonstrate the effect of dissolved carbon dioxide on the pH of water - HSC - SSCE Biology - Question 17 - 2003 - Paper 1
Question 17
a) Describe an investigation that you have carried out to demonstrate the effect of dissolved carbon dioxide on the pH of water. b) Explain why the removal of carbo... show full transcript
Worked Solution & Example Answer:a) Describe an investigation that you have carried out to demonstrate the effect of dissolved carbon dioxide on the pH of water - HSC - SSCE Biology - Question 17 - 2003 - Paper 1
Step 1
Describe an investigation that you have carried out to demonstrate the effect of dissolved carbon dioxide on the pH of water.
Answer
To conduct this investigation, we can set up an experiment using a clear container filled with distilled water. First, we measure the initial pH of the water using pH paper or a pH meter to establish a baseline.
Next, we introduce a source of carbon dioxide into the water, such as by bubbling carbon dioxide gas through a straw or by adding an effervescent tablet. After allowing the carbon dioxide to dissolve for a specific period, we measure the pH again.
Finally, we record our results and compare the initial and final pH readings. A decrease in pH indicates that the dissolved carbon dioxide has increased the acidity of the water, demonstrating its effect on pH.
Step 2
Explain why the removal of carbon dioxide from living cells is important.
Answer
The removal of carbon dioxide from living cells is crucial for maintaining homeostasis. Carbon dioxide is a byproduct of cellular respiration, and its accumulation can lead to a decrease in pH, resulting in acidosis, which can be harmful to cellular functions.
Furthermore, high levels of carbon dioxide can disrupt enzyme activity and affect metabolic processes. Therefore, efficient removal of carbon dioxide ensures the proper functioning of physiological processes, supporting overall cellular health and performance.