Membrane

Resting Membrane Potential When a neuron is not transmitting a signal, it is at rest. During resting potential, between the inside and outside of the neuron there is an ion displacement. The inside of the neuron is negative in comparison to the outside. The outside of the cell has a positive charged sodium and negatively charged chlorine, while potassium, positively charged, is more heavily charged inside the cell. This difference in the charge of sodium, chloride, and potassium maintains the…

Two experiments were conducted in the span of three days, with the plastic bag membrane experiment taking two days to conduct and the egg shell membrane experiment taking three days. The two experiments took place during the same span of days, with the egg membrane lab carried out first. The materials used during the egg shell membrane experiment include: one white egg, a plastic cup labeled “egg”, vinegar, distilled water, corn syrup, a tape measure, saran wrap, a triple beam balance, a…

This all works because in the membrane there are different membrane proteins that use ATP to work. One way is active transport. Active transport is when, for example, sodium, will pass though the protein channel and go to wherever there is a higher concentration of sodium. If there is more sodium in…

“Come on Mike Mitochondria you're slacking!” In Membrane Stadium, the Cells were losing to the Pathogens 4-1 with only fifteen minutes remaining in the game. Coach Nucleus, the brains of this whole team, had to think of something quick or they will lose. Unfortunately, their star player was hurt because of an illegal slide tackle. The game stopped and the Assistant Coach, Mr. Vacuole gave some water to the players. After the penalty kick, they were still down 4-2 with thirteen minutes left. The…

the sun and producing sugar from carbon dioxide. Its structure is made up of a double membrane system. They are known as the outer and inner membranes. The inner membrane surrounds the stroma and grana other words known as stacks of thylakoids (NCBI, 2016). Endoplasmic reticulum: Its main function is translation and folding of new proteins across the ER membrane. Its structure is made up of a single membrane system (BSCB, 2016). There are 2 types of endoplasmic reticulum rough endoplasmic and…

cytoplasm by the outer and inner mitochondrial membrane.The outer membrane is porous and freely traversed by ions and small, uncharged molecules through pore-forming membrane proteins (porins), such as the voltage-dependent anion channel VDAC [19]. Any larger molecules, especially proteins, have to be imported by special translocases. Because of its porosity, there is no membrane potential across the outer membrane. By contrast, the inner membrane is a tight diffusion barrier to all ions and…

Beetroot tissues will be the model investigated in this lab. Specifically the effects of temperature stress on the beetroots cellular membrane. Beetroot is known as Beta Vulgaris, it is one of the healthiest vegetables one can eat with plenty of minerals and vitamins. One of the main vitamins in beetroot is betaine which serve as organic osmolytes that are synthesized or taken from the surroundings by the cells to protect against osmotic stress, high temperature or, drought. Roots of beet also…

substances across the cell membrane. The cell membrane is found on the outside of the cell and controls what goes in and out of the cell. It is selectively permeable. The membrane has cells that share common structural features, including an outer boundary. All cells are contained by a cell membrane, which keeps the pieces inside. It consists of a phospholipid bilayer with proteins embedded throughout. It separates what’s inside the cell, some of the proteins. The plasma membrane helps maintain…

three parts; the plasma membrane, the cytoplasm, and the nucleus. The plasma membrane is the outer boundary of the cell, it separates two major fluid compartments- the intracellular fluid and the extracellular fluid, and plays a key role in cell transport. Cell transport is the movement of materials across a selectively permeable membrane, and this process can occur in two ways; passive transport and active transport. Passive transport allows substances to cross the membrane without any use of…

Simple diffusion is a passive process involving the movement of smaller, nonpolar molecules moving across a membrane from a high concentration area to a low concentration area without any forces acting upon the substance. Facilitated diffusion is a passive diffusion process involving the transportation of large or polar molecules and ions across the cell membrane (which they cannot normally pass through) with the help of transport proteins. Because facilitated diffusion is a form of passive…