Osmosis

Osmosis Eggs : IA Exercise mini-lab report February 2012 AIM : To use vinegar-softened bollock, or gristly orchis, as a cell model to blob osmosis effects. Focused Research Question : How will increase carbohydrate tautnesss affect the dimensions of the rubbery testicle ? Hypothesis : If the rubbery eggs are a good cellular model, then change magnitude orthogonal chou concentrations should cause more osmosis of piss pink out of these eggs. Predictions : Egg size should decrease the most in the solutions with the higher(prenominal)est boodle concentration. Eggs might also take in water (and grow in size) in the absence of external solutes (plain water). reason Information Osmosis is the passive diffusion of water by dint of a semi-permeable membrane. weewee moves down its concentration gradient, toward equilibrium, depending on the comparative marrow of solute inside and outside. The greater the solute concentration, the lower the water potential. Water mov es by osmosis down this water potential gradient (toward the line of business of high solute concentration).

Experimental Variables Independent Variable : sugar concentration open Variable : mass and circumference of the eggs firm Variables : volume of solutions, temperature of solutions, time of incubation (all are kept constant) overtop : rubbery egg, allowed to re-harden and then put into water Materials and Methods : Eggs orotund beakers vinegar Water Sugar syrup (100% syrup : 1Kg sugar per liter water) Scale, tie, ruler, Refrigerator 1) vizor egg circumference (with string and ruler, eagle-eyed dimensi on) and bidt. Record results. 2) Soften the! eggshells by putting the eggs in vinegar, a weak acid which dissolves the calcium carbonate of the shell, purgative carbon dioxide. This and all subsequent incubations were performed at 4oC (in the refrigerator). 3) broadsheet and weigh the eggs again (24h later), incubating them subsequently in the distinct solutions (100% syrup, 50% syrup, and plain water), 3 eggs in each(prenominal) condition. 4) Measure sizes...If you want to get a full essay, rewrite it on our website: BestEssayCheap.com

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