Active transport is a carrier-mediated transport process that requires ATP and can move substances against a concentration gradient. An example of...Become a member and unlock all Study Answers Start today. Try
There are important implications for policy development and urban design interventions aimed at encouraging greater use of the active modes. This research shows we still have some way to go to achieve the levels of active transport uptake necessary for the creation of environmentally sustainable and ...
A main example of active transport is the maintenance of ion gradients across cell membranes, which depends on the function of specific carriers or “ion pumps.” These ion transporters are grouped into three main classes, known as ATPases P, F, and V. The most important will be considered...
of the same charge, or it may be accompanied by transport of an ion of the opposite charge. These arrangements preserve the electrical status of the cell. Furthermore, in secretory tissues the rate of transport for an actively transported fluid (for example saliva, bile) can be constant ...
Why does active transport require an energy supply? C A Water molecules move from a region of higher water potential to a region of lower water potential. B Solute molecules move from a region of lower water potential to a region of higher water potential. C Solute molecules move from ...
A good example of the dynamic nature of iron cycling in the environment and its impact on the reducibility of minerals. CAS PubMed Google Scholar Mejia, J., Roden, E. E. & Ginder-Vogel, M. Influence of oxygen and nitrate on Fe (hydr)oxide mineral transformation and soil microbial ...
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What is an example of osmosis in living organisms? What are the steps in the process of diffusion and osmosis? Explain the processes of osmosis and diffusion. Difference between Osmosis and Diffusion, give a relevant examples. What are two exampl...
A simple illustrative example is the enzyme-catalyzed unimolecular isomerization reaction, A⇄B, in aqueous solution. At equilibrium, when the Gibbs free energy of the reaction, ΔG=0, the equilibration of reactantR substrate AR and product substrate BP concentrations can be modeled as in ...
The Na+/K+ pump is an example of a primary active transport system that maintains a gradient of approximately 140 mM Na+ outside of the cell and 5 mM Na+ inside the cell. In secondary active transport, the energy from ATP is not directly utilized. Instead, the electrochemical gradient ...