what is the indepent variable, dependent variable, and constants of the cell transport lab? here is the procedure: Procedure: 1. Before beginning the experiment, record at least two observations of the raw egg in your lab report. 2. Wrap the string around the center of the egg to determine its initial circumference. Measure the string and record the initial circumference in centimeters (cm). 3. Gently wrap the egg in the jar and completely cover the egg with vinegar. Use the lid to seal the jar and note the time. This will be considered the “start time” of the experiment. 4. After approximately 24 hours from the start time, carefully remove the egg from the jar of vinegar. If the shell has completely dissolved, exposing the inner membrane, move on to the next step. If not, return the egg to the vinegar until the shell has completely dissolved. 5. Record at least two observations of the egg. 6. Measure and record the circumference of the egg, being sure to measure it in the same way every time you measure circumference. 7. Pour out the vinegar and rinse the jar. Then fill the jar about half full of tap water. 8. Gently place the egg back into the jar, making sure it is completely covered with water. Use the lid to seal the jar. 9. After a total of 48 hours from the start time, carefully remove the egg from the jar of water. 10. Make two observations of the raw egg, and measure and record the circumference. 11. Gently place the egg back into the jar, making sure it is completely covered with water. Use the lid to seal the jar. 12. After a total of 72 hours from the start time, carefully remove the egg from the jar of water. 13. Make two observations of the raw egg, and measure and record the circumference.