What happens to a de-shelled egg when it's not in a solution?
Answers
Answer:
a hospital based cross-sectional study, it is planned to estimate the mean D-dimer level among COVID-19 patients. From previous literature, the standard deviation was found to be 200 ng/mL. If the researchers want to estimate the mean with a 50 ng/mL precision and 95% significance level, what is the minimum sample size required?
Answer:
When we put a de-shelled egg in pure water nothing will happen, this is because there will be no result of movement of molecules as water is an isotonic solution (same concentration of solute and solvent). In comparison if the same egg goes under salt water its cells will swell because of endosmosis.
Explanation:
Eggs soaked in distilled water will gain mass and appear dramatically swollen. Eggs in dilute salt solutions will gain mass, and even those in very concentrated solutions might gain mass. Eggs buried in salt or other dry media should lose mass. The de-shelled eggs serve as good models of human cells.
A de shelled egg is surrounded by a semi permeable membrane. When placed in a concentrated salt solution for five minutes, water will flow from the cell to the solution that is exosmosis will take place causing the egg to shrink. This happens because salt solution is hypertonic.