Cell Membrane Lab Report

Humans transport things around the world just like the cell membrane. The cell membrane uses active transport which uses energy to move thing around. It also uses passive transport that doesn’t require energy at all to move molecules. In order for things to move around in the cell membrane, it needs the cell transport. The cell membrane won’t be a membrane without cell transport. Cell membranes are selectively permeable which can let things in and kick some out. The cell membrane is liquidly and is made out of different things like a mosaic. That’s how the cell membrane got its name fluid mosaic model. The fluid mosaic model of the cell membrane has a different mixture of phospholipids, cholesterol, and proteins. The carbohydrates are attached

Diffusion is when any molecule moves from high to low concentration. Molecules will spread until they have equilibrium. Diffusion equilibrium is reached when the concentration gradient reaches zero. In the lab that we did in class was diffusion. We used iodine and starch. We put starch in the plastic tube and tied it making sure there was no starch on the edges. Then we put iodine in the water and put the starch in the iodine. We kept it for a while. The iodine went in the starch making the water clear and the starch to turn from white to dark brown. This shows diffusion because it shows how the iodine went from high concentration to low concentration. A real life example of diffusion is when you spray perfume in one corner of a room, the molecules of the spray will move around the room. That’s

Endocytosis is when a cell wraps the cell membrane around a particle in order to pull it into a cell. A real life example is when you eat a cheeseburger; you need the energy to grab it, then eat it, and then digest the cheeseburger. Phagocytosis is when the cell uses endocytosis to pull the solid particles. A real life example is when an animal hunts and consumes its prey. Pinocytosis is when the cell uses endocytosis to pull the liquid particles. Cell transport is when materials move across the cell membrane. Without cell transport things won’t be able to move around and the cell could not move material into or out of the cell which means the cell can’t get what it needs. The cell membrane is related to all of these types of cell transport because it transports the molecules either through the active transport or passive transport. Cells need to maintain stable internal conditions because it is the one that needs to get rid of carbon dioxide and other things. If it’s not stable our human body wont function