Investigation the Importance of Surface Area to Volume Ratio

BackgroundCells rely on the diffusion process to gain nutrients and to distribute waste. Because of this, the surface commonwealth to volume proportionality of cells is very important. As a purpose becomes sm completelyer, its surface area to volume proportionality becomes greater allowing fast diffusion for cells. Though as a object becomes larger, it?s surface area to volume dimension becomes smaller and diffusion would no longer be sound for cells as the process would take too long. This is why in that location is a limit to the size of cells.

Research QuestionHow does the surface area to volume ratio effect the time it takes for a object to diffuse?HypothesisThe higher the surface area to volume ratio is, the faster the agar gelatine will become clear.

VariablesFor this experiment, the self-sustaining variable was the surface area to volume ratio of the square blocks era the dependent variable was the time it took for the cube to become transparent. The controlled variables were the showcase and concentration of the acid, the indicator (phenolphthalein), the process of how acid was added to the beaker, the use of the stop watch as well as how much of the cubes were covered with acid.

MaterialsAgar change integrity containing:- 0.1 M NaOH- Phenolphthalein0.



1 M H2SO4100 ml or 250 ml beakerCeramic tilePlastic spoonKnifeGloveStopwatchMethodOnce all materials were gathered, the glove was put on and a 2 cm x 2 cm x 2 cm, 1 cm x 1 cm x 1 cm or 0.5 cm x 0.5 cm x 0.5 cm cube was cut with the knife of the ceramic tile. After, the cube was transferred into the beaker using the spoon. The 0.1 M H2SO4 was then added to the beaker until it just covered the agar jelly (See Figure 1). The stopwatch was then started. The agar jelly was observed until it turned...

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