Reverse osmosis

Research Question What is the effect of surface area on volume ratio over rate of diffusion of pigment regarding the agar cube, measure by percentage volume of diffusion through time? Hypothesis The experiment involves the use of agar cubes. If the cells of these cubes desire a great surface area to volume ratio in order to carry out their needs (exchanging materials with the environment, receiving oxygen, getting rid of waste products), the SA:V ratio will be larger. Consequently, the rate of…

kinetic energy. The only way for diffusion will never happen is if the temperature is at absolute zero, where there is no kinetic energy inside the molecules. Osmosis is the diffusion of water through a membrane. For this to happen the membrane must be semi-permeable, which means the membrane chooses which molecules to move through it. For osmosis, no energy is…

There were many observable factors when investigating osmosis in potatoes. Four different solutions were created (distilled water, 1% salt (NaCl), 3% salt and 5% salt. The potatoes were sliced until they were 3cm long, each test tube contained 3 strips of potato cores and a different concentration. The potato strips were weighed and the results recorded. The potato cores were left in each solution for 24 hours. Once the test results were collected the data was averaged and placed into a graph…

dialysis Cell B was placed in 5% glucose and 95% water solution, therefore making the concentration of water inside the cell (100% water), greater than the concentration of water outside the cell (95% water). This data has proved the concept of osmosis in the cells, related to our claim that water molecules move out of the cell because the concentration of water is greater inside therefore cell than it is outside the cell. The cells have to maintain a balance so that the concentration of water…

Eggsperiment Purpose Is an egg similar to a human cell? Hypothesis If the egg is put in milk, then the shell will grow back. According to Mama Natural, “High-quality eggshells contain 27 essential microelements but they’re mostly composed of calcium carbonate, a form and structure that’s very similar to our bones and teeth.” Also, according to My Plastic Free Life, “eggshell powder contains roughly 400 milligrams of calcium per gram.” Since the milk I use, 2% Fat, has 295 milligrams in one cup…

These first five questions were asked to test Kimora’s ability to create concrete operational thoughts. It was designed for her to use her classification skills to come up with the correct answer. Kimora answered all questions with confidence, but was unable to understand that one set of object could contain another. She was able to see all three smiles, and two sunglasses, but only two pictures therefore the amount of pictures and sunglasses were the same amount. The next activity was using 3…

the soil to survive, plants go through a process called osmosis so that water uptake may take place. Osmosis is the movement of water through a cellular membrane, it is a type of diffusion that moves water molecules from a higher concentration of salt to a place of lower salt concentration to create a cellular environment that is stable and equal. Osmosis is vital to the stability and growth of the plant life, without the process of osmosis, other processes that are vital in the life of a plant…

higher concentrated solution than a lower concentrated solution. The data also supported the prediction that the mass of the G. gallus domesticus egg in 10% NaCl will weigh less than the G. gallus domesticus egg in the 1% solution. Diffusion and osmosis play an important role in moving solutes and water from high concentrations to low concentrations until equilibrium is reached. In both the 5% and 10% solutions the mass of the G. gallus domesticus egg decreases in mass and then slowly starts to…

needed by organisms for growth and to manufacture various body substances. Every organism must keep it internal body fluids in balance in order to survive. Water uptake must balance water loss. Water- roots and root hair absorb water from the soil by osmosis. Roots are long and have a large surface area. Roots have thousand of root hairs behind the root tip. Root hairs increase the surface area, ensure close contract with soil to increase rate of water uptake and help penetrate all of the soil.…

Activity #1 1. Potassium and Sodium. Potassium is more concentrated inside the cell and sodium is more concentrated outside the cell. 2. Resting membrane potential is the difference in voltage of the fluids inside a cell and outside a cell. It is measured by the difference in voltage inside and outside of the cell. 3. On the outside of the resting membrane potential it would remain at 0, however on the inside it dropped the voltage from -70 to -40. This happened because with the increase of K+,…