In experiment 1.1, we studied the relationship molecule size has with diffusion rate. Our hypothesis claimed that smaller molecules will travel farther across the agar plate given the same duration of time. Based on the data collected, our hypothesis was proven true. Potassium permanganate has a molar mass of 158 g/mol, methylene blue 319.85 g/mol, and potassium dichromate with 294.185 g/mol. Potassium permanganate diffused the farthest, potassium dichromate second, and methylene blue secured the least distance diffused. As expected, a negative correlation between the size of a molecule and the rate at which it diffuses exists.
This explains why large, complex molecules need a carrier or channel protein to enter the cell. These molecules are …show more content…
The hypothesis stated that sucrose, because the particle is too big to diffuse through the dialysis tube membrane, will remain it its beginning location. Sucrose in the dialysis tube will remain in the dialysis tube, sucrose in the outside solution will remain in the outside solution. Water on the hand possesses the proficiency to diffuse freely across the membrane. As osmosis state, water will move down its concentration gradient across the membrane (Tandy 2016). Referring to graph 1.2, the dialysis tube containing sucrose shows a gain in volume at 45 minutes will the distilled water tube reported loses in volume. There is a high concentration of water molecules outside the sucrose dialysis bag then inside, resulting in a hypertonic, or water gaining, environment for the tube. Water molecules will rush to the side of greater solute concentration (Tandy 2016). The distilled water dialysis tube has a lower solute concentration then the sucrose solution, so once again, water molecules will diffuse toward the side of higher solute concentration, out of the tube. This movement is responsible for the lose of water inside the
This explains why large, complex molecules need a carrier or channel protein to enter the cell. These molecules are …show more content…
The hypothesis stated that sucrose, because the particle is too big to diffuse through the dialysis tube membrane, will remain it its beginning location. Sucrose in the dialysis tube will remain in the dialysis tube, sucrose in the outside solution will remain in the outside solution. Water on the hand possesses the proficiency to diffuse freely across the membrane. As osmosis state, water will move down its concentration gradient across the membrane (Tandy 2016). Referring to graph 1.2, the dialysis tube containing sucrose shows a gain in volume at 45 minutes will the distilled water tube reported loses in volume. There is a high concentration of water molecules outside the sucrose dialysis bag then inside, resulting in a hypertonic, or water gaining, environment for the tube. Water molecules will rush to the side of greater solute concentration (Tandy 2016). The distilled water dialysis tube has a lower solute concentration then the sucrose solution, so once again, water molecules will diffuse toward the side of higher solute concentration, out of the tube. This movement is responsible for the lose of water inside the