Passive & Active Transport in Cells from Chapter 3 / Lesson 2 69K Passive and active transport are vital for the movement of nutrients and other substances in a cell. Discover the tiny world of cell transport with the concentration gradient, simple diffusion, ...
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 of s...
The flux going in has to be the same as the flux going out. Diffusion can be facilitated by factors that Fick's law does not take into account, like convection, or air currents, that assist in spreading particles. What are examplex of Fick's first law in action? Examples of Diffusion...
Membrane transport is an essential process that moves essential nutrients into cells and moves waste products out of cells. There are many different mechanisms through which this process takes place, ranging from passive diffusion, in which a molecule can pass through the membra...
” but also the assessment of the waste degradation state in different areas of the landfill (when studying the landfill gas potential for its harnessing, or developing the project of the final closure), as well as the landfill geotechnical stability will be facilitated with the help of these ...
The latter, in turn, can then bind Fcγ-receptors present at the surface of some spe- cialized cells and thus link the virus to them. For instance, virus-specific immunoglobulin G (IgG) can enhance infection by various flaviviruses, including, e.g., Dengue virus, rather than protecting ...
Some research teams are trying to alleviate this phenomenon by either increasing the order of the numerical scheme and/or reducing the size of the mesh cells. Very interesting works in that respect were performed by Bernard et al. [28] in the wind energy sector, Ahmed et al. [29] in ...
Desiccation-tolerant cells can avoid or resist harmful effects derived from mechanical stress through increased vacuolation and/or cell wall (CW) folding [42]. Most plants, including crops (i.e., drought-avoiding species), can rarely survive water potentials of less than −4 MPa. Although the...
Additionally, the stomata have guard cells, which open or close to regulate the transpiration level. Transpiration facilitates the cooling of plants. In addition, the process regulates the rate of absorption of water in the roots, intake of mineral nutrients, and the osmotic pressure within the pl...
of some specialized cells and thus link the virus to them. For instance, virus-specific immunoglobulin G (IgG) can enhance infection by various flaviviruses, including, e.g., Dengue virus, rather than protecting the host against infection [1]. Other examples are the binding of apolipoprotein-E...