Diffusion is the process wherein the molecules move from a region of higher concentration to a region of lower concentration down the concentration gradient.
process is still considered passive because it doesn’t really require a true energy output, but the protein molecule acts as sort of a check so that transport isn’t as free as it is in simple diffusion. The cell doesn’t really have to work, in other words, but it still has some ...
Immunodiffusion is a laboratory testing technique people can use to check for the presence of antibodies in a sample and determine their concentrations. In this test, a technician adds antibodies and antigens separately to a plate filled with a semisolid medium like agar gel. The plate is left...
Diffusion is the passive movement of molecules from an area of high concentration to an area of low concentration whereas osmosis is the movement of a solvent such as water from an area of low solute concentration to an area of high concentration...
Passive diffusion is the movement of molecules across a membrane, such as a cell membrane. The movement does not require energy. Infacilitated diffusion, a molecule is transported across a membrane with the help of a carrier protein. Osmosisis a type of passive diffusion in which water diffuse...
An example of the other type that immediately comes to mind for me is the facilitated diffusion of glucose across cell membranes. Glucose can be a large molecule, but it is a critical part of making energy in plants and animals as well as being the sugar produced by plants in photosynthesis...
In this lesson, we'll discuss the structure of the cell membrane and how this influences diffusion. Then, we'll give three examples of substances that can move by diffusion alone through the membrane. What Is the Cell Membrane? Think of the walls of a classroom. They are designed to keep...
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foundinplantcellsandsomeprotistcells.Chromosome•Athreadlikestructureinthenucleusofacellthataremadeupofgenes.Cytoplasm»ThewaterygelinsidethecellDiffusion•Thetendencyofsubstancestomovefromanareaofgreaterconcentrationtoanareaoflesserconcentration.Substancescanpassinandoutofcellsbydiffusion.Fermentation•Whenoxygen...
Cell junctions are spaces between neighbouring cells that are usually part of the same tissue or membrane layer. Cell junctions have protein...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough homework ...