How much is the mass of an egg Essay

In works and animate being cells, there is a cell membrane that helps keep the construction of a cell and map. The cell membrane is a biomembrane or biological membrane, which separates and protects the membrane inside cell from its outside environment. It besides acts as a selective barrier within or around the cell.

The cell membrane is selectively-permeable to ions and organic molecules. The selectively-permeable membrane besides controls the motion of substances in and out of cells, by choosing certain sort of molecules. The cell membrane consist of phospholipid bilayer, which is composed of hydrophilic caputs and hydrophobic dress suits with encircled proteins, which are involved in a scope of cellular procedures such as Channelss for inactive conveyance, cell adhesion and pump for active conveyance. Due to, the cell being selectively-permeable, merely hydrophobic solutions can go through through it by simple diffusion.Thus, non all molecules can go through through it straight, so molecules are being transmitted or pumped into the cell by protein channels or any other method of conveyance.There are many methods of conveyance across membranes.

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Simple diffusion is the inactive conveyance of non-polar, hydrophobic molecules from a high to low concentration. Osmosis is the diffusion of H2O from a part of high H2O concentration through a semi-permeable membrane to a part of low H2O concentration. The semi-permeable membrane allows merely certain selected atoms or molecules, to go through through. Osmosis ‘s way of diffusion is determined by its entire solute concentration. There are three types of solutions that explain the motion of H2O ( Osmosis ) .

Hypertonic solution that has a high solute concentration compared to its milieus. When an animate being cell is placed into a hypertonic solution it loses H2O and psychiatrists, because H2O molecules move across the semi permeable membrane from interior of a cell into the milieus from a part of high concentration to a part of low concentration.Hypotonic solution has a low solute concentration compared to its milieus. When an animate being cell is placed in a hypotonic solution, the cell is more likely to swell or even decease, because the H2O moves from the environing into the cell from a part ofA higher concentration to a part of lower concentration.Isotonic solution is one where there is no difference between solute concentrations across the semi permeable membrane. As a consequence, there is no net motion of H2O across the membrane, which makes it a normal cell. There are different types of solutions in workss and animate beings.

In animate beings Hypertonic solution is called Lysed. Hypotonic solution is called Shriveled and Isotonic solution is called Normal.hypertext transfer protocol: //bio1151b.

nicerweb.com/doc/class/bio1151/Locked/media/ch07/07_13WaterBalanceA.jpg

Figure.1

Different types of osmosis in an animate being cell.Research inquiry: How much is the mass of an egg affected by the concentration of solution it is immersed in?Hypothesis: Cells survival depends on equilibrating H2O consumption. Harmonizing to my cognition of Osmosis, it is the diffusion of H2O across membrane. Simple diffusion is the inactive conveyance of non-polar, hydrophobic molecules from a high to take down concentration. Direction of Osmosis is determined by comparing entire solute concentrations.

There are three different sorts Osmosis. Hypertonic solution base on ballss through membrane from high concentration of solutes to less H2O concentration. Thus it shrinks. The 2nd sort is Hypotonic solutions, it passes through the membrane from less solute concentration to more H2O concentration. Therefore it additions a batch of H2O, and the cell may split.

The 3rd is Isotonic solution, which passes through membrane from equal concentration of solutes to equal concentration of H2O. Based on my hypothesis, I predict that in higher concentration of NaCl solution, mass will be higher, as the H2O will be lost.Where in lower concentration of NaCl solution, the mass will be lower, because the egg is more concentrated than the solution, and therefore it will take more H2O and addition mass in a certain period of clip.Independent variable: The altering variable will be the different concentration of NaCl solution ( 1M, 2M,3M, 4M and 5M ) .These concentrations of NaCl solution are changed, to find the alteration in mass of an egg. The alteration in mass will be determined by spliting the initial and concluding reading of an eggs mass.

Dependant variable: The initial and concluding mass of an egg in different concentrations of NaCl solution.Controlled variable: The clip will be controlled by utilizing a stop watch, because each NaCl solution should be kept for 6 hours, to so find the concluding mass of the eggs.

Materials:

5 Beakers of 3 A- 250mL beakers.Electronic balance, set at 0 gms.Spoon and paper towels.Sodium chloride solution, with different concentration of NaCl solution ( 1M, 2M, 3M, 4M and 5M ) .5 fresh biddy ‘s eggs.Stop tickerGoogle.

Omosis.2006.http: //www.purchon.com/biology/osmosis.

htm ( Accesses on the 20th of November, 2010 ) .Google. Cell structure.2010. hypertext transfer protocol: //www.tutorvista.com/biology/basic-cell-structure ( Accesses on the 26th of November, 2010 ) .

Method:

Topographic point 5 eggs in 5 beakers of dilute acid overnight, for 24 hours to take the difficult shell go forthing the membrane integral.

Be cognizant of non destructing the membrane by taking little pieces.Carefully take the eggs from the acid with a spoon and rinse under a pat.Topographic point the eggs on paper towel and gently chuck the eggs, till they dry.

The eggs should so be measured on a balance, and their mass must be recorded.To get down the reaction, place the eggs on a balance and record, each of their multitudes in your informations tabular array. Besides, put a rubric for the tabular array.Label 5 beakers, to A, B, C, D & A ; E.In beaker A, topographic point 1 M of NaCl solution.In beaker B, topographic point 2 M of NaCl solution.

In beaker C, topographic point 3 M of NaCl solution.In beaker D, topographic point 4 M of NaCl solution.And in beaker E, topographic point 5 M of NaCl solution.Carefully take each egg and topographic point it to one beaker. Remember to instantly get down the halt ticker till it reaches 6 hours.While, waiting, compose your observations of the reaction of the eggs and solutions.When the 6 hours are done, take the eggs from the solution gently by a spoon. Then, conveying paper towels to dry the eggs.

When the eggs are dried, place each of the eggs on a balance, to find their mass.Write your observation and informations on your tabular array.When you have cleaned and washed your equipments.

Sit down and find the per centum alteration in mass by replacing you concluding mass, and spliting it by your initial mass, so multiply it by 100:After finding the alteration in mass of the egg, verify the type of Osmosis that have occurred in the experiment, variables, stuffs, safety factors, mistakes and so you will be ready to compose your membrane map lap study. In your lab study, you should so include all these and your treatment and decision.When you finished all these, so compose you ‘re abstract and make a tabular array of contents.The undermentioned images illustrate the types of Osmosis: This will assist you find the type of Osmosis, when experimenting.

Figure.6 Hypertonic solution, ( Shriveled ) in an egg cell.

Figure.5 Hypertonic solution, ( Shriveled ) in an egg cell.

Figure.4 Hypertonic solution, ( Shriveled ) in an egg cell.

Figure.

3 Isotonic solution, ( Normal ) in an egg cell.

Figure.2 Hypotonic solution, ( Lysed ) in an egg cell.

Result/Data

Datas collected should be organized in this same mode. If possible put diagrams or images, to demo your experiment, which will do clear of your experiment.

EggsSolutionConcentrationMass of egg before the reaction ( gms )Variable control ( Time )Mass of egg after the reaction ( gms )Observation ( include any alterations, like formation of bubbles, colour and form )Percentage alteration in mass ( Divide concluding by initial readings, so multiply it by 100 )Type of OsmosisEgg ( A )NaCl1 M6 hoursEgg ( B )NaCl2 M6 hoursEgg ( C )NaCl3 M6 hoursEgg ( D )NaCl4 M6 hoursEgg ( E )NaCl5 M6 hoursFigure.7 Collected information of the solutions.To chart the gathered information of the different concentration solutions, a line graph should be included.

It should supply the per centum alteration in mass and the concentration of NaCl. The undermentioned graph is an illustration of made up concentrations.To happen the per centum alteration in mass of the egg in NaCl solution, the undermentioned expression is used:EggsSolutionConcentrationMass of egg beforeMass of egg afterPercentage alteration in massEgg ( A )NaCl1 M67.9g68.8101 %Egg ( B )NaCl2 M67.3g67.1g99 %Egg ( C )NaCl3 M67.8g63.6g107 %Egg ( D )NaCl4 M67.1g59.2g113 %Egg ( E )NaCl5 M67.2g54.9g122 %Figure.8 Shows a line graph of mean mass of NaCl concentration.

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