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Bio Lab 3 Cell Membranes Lab Report

A completed lab report analyzing cell membrane structures and their functions in biological systems.

Eli Simmons
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1BioLab3Cell MembranesLab ReportI.DiffusionDefine the following terms.SolventAny substance capable of dissolving or dispersing another substance.SoluteAny substance dispersed by water.Solution.Taken together, the solvent and the dissolved solute.DiffusionThe movement of dissolved molecules from an area of higherconcentration to lower concentration.ConcentrationgradientIs present when there is a difference in the amount of like moleculesin two regions.DynamicequilibriumWhen the solvent and solute molecules become equally distributedand the gradient comes to exist.EXERCISE 1–Factors influencing rate of diffusion•Predicthow molecule size and temperature will affect the outcome of this experiment.Molecule size will either increase or decrease diffusion based on the temperature.Record the data from the information in the lab.Potassium Permanganate R.T.Methylene Blue R.T.Time(min)TotalDiameter(mm)Distance ofDiffusion *(mm)Rate (mm/min) *TotalDiameter(mm)Distance ofDiffusion *(mm)Rate (mm/min) *08mm0mm0 mm/min7mm0mm0 mm/min1514mm6mm.43mm/min9mm2mm.13 mm/min3018mm10mm.33 mm/min10mm3mm.1 mm/min4520mm12mm.27 mm/min10mm3mm.07 mm/minPotassium Permanganate 5 CelsiusMethylene Blue 5 CelsiusTime(min)TotalDiameterDistance ofDiffusion *Rate (mm/min) *TotalDiameterDistance ofDiffusion *Rate (mm/min) *

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