Osmosis Egg Lab Report
THE AFFECTS OF DIFFERENT SUCROSE
SOLUTIONS ON OSMOSIS
OF EGG MEMBRANES
A laboratory report submitted for
LE@D Biology 1004
Michele Liveley
Arkansas State University Mountain Home
Mountain Home, AR
September 2013
Osmosis Egg Lab Report
Introduction
Osmosis is the passing of water or other solutions from an area of high concentration of particles to an area of less concentration. The cell membrane is an organelle, selectively permeable, and only allows certain materials to pass through; it can allow smaller molecules to pass while blocking larger molecules. Molecules that are blocked can be moved through active transport, such as, through proteins that are embedded in the bilayer of lipids. …show more content…
The decalcified eggs will be weighed before and after being put in the solutions. The zero and ten percent solutions are hypotonic, so the eggs should gain weight. The twenty percent solution is isotonic and the weight should primarily stay the same. The forty percent solution is hypertonic, so the weight should decrease. (Muller)
Experimental Procedure Eight eggs are placed in a medium glass bowl and covered in vinegar. (Although, we only need four eggs extras are made in the case some of them break.) The bowl is drained after 1.5 days and new vinegar is added until the eggs are covered. The vinegar is drained 1.5 days after replacing the vinegar. Each egg is rinsed in tap water. The eggs are now decalcified and the plasma membrane is exposed. Next, prepare our solutions of sucrose concentrations. To prepare the 10% sucrose solution, measure 17 ounces of distilled water and stir in ¼ cup sugar. Mix 17 ounces of distilled water and stir in ½ cup sucrose for the 20% solution. Mix 17 ounces of distilled water and stir in 1cup sugar for the 40% solution. The 0% sucrose solution is only distilled
SOLUTIONS ON OSMOSIS
OF EGG MEMBRANES
A laboratory report submitted for
LE@D Biology 1004
Michele Liveley
Arkansas State University Mountain Home
Mountain Home, AR
September 2013
Osmosis Egg Lab Report
Introduction
Osmosis is the passing of water or other solutions from an area of high concentration of particles to an area of less concentration. The cell membrane is an organelle, selectively permeable, and only allows certain materials to pass through; it can allow smaller molecules to pass while blocking larger molecules. Molecules that are blocked can be moved through active transport, such as, through proteins that are embedded in the bilayer of lipids. …show more content…
The decalcified eggs will be weighed before and after being put in the solutions. The zero and ten percent solutions are hypotonic, so the eggs should gain weight. The twenty percent solution is isotonic and the weight should primarily stay the same. The forty percent solution is hypertonic, so the weight should decrease. (Muller)
Experimental Procedure Eight eggs are placed in a medium glass bowl and covered in vinegar. (Although, we only need four eggs extras are made in the case some of them break.) The bowl is drained after 1.5 days and new vinegar is added until the eggs are covered. The vinegar is drained 1.5 days after replacing the vinegar. Each egg is rinsed in tap water. The eggs are now decalcified and the plasma membrane is exposed. Next, prepare our solutions of sucrose concentrations. To prepare the 10% sucrose solution, measure 17 ounces of distilled water and stir in ¼ cup sugar. Mix 17 ounces of distilled water and stir in ½ cup sucrose for the 20% solution. Mix 17 ounces of distilled water and stir in 1cup sugar for the 40% solution. The 0% sucrose solution is only distilled