Molecular diffusion

IV. Discussion The Concentration Gradients is known as known as diffusion. They are spontaneous process because there is no energy input at the beginning (Reece et al., 2011). Each substance could diffuse to its own concentration gradient without affected by the concentration of other substances (Scott 2015).In the first experiment of the Concentration Gradients. The color of the clear water was expected to change into the color of the potassium permanganate dye, which was purple. Observation…

membrane keeps the shape of the cell; some even consider it the skin of the cell. The plasma membrane does many things, but the main thing is it allows the diffusion of molecules.…

Particles can move. One type of movement is diffusion. Diffusion is when particles move from an area of higher concentration to an area of lower concentration. The particles can move throughout a liquid, an area , or through a semipermeable membrane. Diffusion can be facilitated or non facilitated. When no other factors are involved in diffusion the particles are moving down their concentration gradient so that the amount of particles can be evenly distributed. if proteins or helpers are…

The purpose of the experiment was to measure the amount of diffusion that has occurred over three minutes and examine the effect of the surface area to volume ratio using of agar cubes which were infused with phenolphthalein as an indicator that the acid had diffused. Diffusion is a significant process by which substances such as nutrients, water, oxygen, and cellular wasted are transported between living cells and their environment. The four different sized agar cubes (0.5cm, 1cm, 2cm, 3cm)…

The iodine lab demonstrated the concept of diffusion, the movement of molecules move from a higher concentration to a low concentration through a semipermeable membrane. In the experiment, we observed a beaker filled with distilled water and Lugol’s iodine solution enter a bag filled with glucose and starch solution through the semipermeable membrane provided by the dialysis tubing. While the beaker remained the same color throughout, the solutions in the bag changed from a clear color to a…

to volume ratio affects its rate of diffusion. The proposed hypothesis was if a big surface area to volume ratio is something very desired by cells that need efficient and fast diffusion for their functioning (Oxygen, water, and waste), then the cube with the largest Surface area will have the most molecules diffused into the agar cube because the more surface area a cube have, the more molecules the agar cube is getting per minute and thus the rate of diffusion will be faster. The experimental…

human body to be in equilibrium we need diffusion and osmosis to regulate the movement of substances. This not only occurs in plants and animals but in humans too. Diffusion is a form of passive transport since it does not require energy, and since osmosis is a specific type of this dispersion it does not require cellular energy as well. Yet it still needs kinetic energy. As small as these two mechanisms are they occur in our body on a daily basis. Diffusion is an extended way of transportation,…

membranes as its genetic makeup contains twenty-four atoms. Chloride Ions are also able to penetrate the membrane as it only contains a single atom. Prediction: If the tube tests positive for starch, glucose, or chloride ion we should see some form of diffusion through the artificial tube that represents the membrane. Once thirty minutes have passed and the water is tested for the molecules concentrated in the tube, we would find that the water has tested positive for both glucose and chloride…

The cell has several different ways that it allows molecules and ions to cross its membrane, including bulk transport, osmosis, passive transport, and active transport. The purpose of the cell membrane is to protect the cell and only allow specific substances to cross the membrane, such as amino acids or water. Lipids hold the membrane together, along with proteins and carbohydrates. These lipids are saturated or unsaturated, and have a hydrophilic head. The tails hold the membrane together due…

Abraham Baraki 10/30/16 Bio-lab 4 report Angela Dipaolo Introduction Compare Diffusion and Osmosis Diffusion is the movement of substances from high concentration to low concentration. In this movement do not occur a membrane. Molecule of gas like perfume it can diffuse and sugar will be dissolve in the cup of coffee. In a diffusion process gradient concentration is high to low Osmosis is the movement of water through the permeable membrane. Osmosis is any the process of substance that…