Year 12 Medical students recently embarked on an engaging and hands-on practical investigation to explore the principles of osmosis, a fundamental concept in cell biology.
Students used raw eggs which had been soaked in vinegar (acetic acid) for several days. The acid reacts with the calcium carbonate shell, dissolving it completely and leaving the inner membrane intact. Once the shells were dissolved, the students measured the initial mass and circumference of each deshelled egg. They then placed the eggs into water solutions and added food colouring.
This practical truly brings the abstract concept of osmosis to life, providing Year 12 students with valuable experimental skills and a deeper appreciation for the processes that maintain life at the cellular level.
