Homework:
What is active transport?
Answer:Active transport is the mediated process of moving molecules and other substances across membranes.
what is passive transport?
what is passive transport?
Passive transport or diffusion. Passive transport is the simple exchange of molecules of a substance across the plasma membrane, during which no expenditure of energy that provides the cell.
What is concentration gradient?
What is concentration gradient?
Concentration gradient is the difference in solute concentration between two solutions or media.An example: you have water in a container to which you add salt, but do not shake, by the time you add the salt, the highest concentration of salt will be at the bottom of the container, while the higher the concentration is minimal. This difference is the gradient.
what is osmosis?
what is osmosis?
Osmosis is a physical-chemical phenomena related to the behavior of water as a solvent for a solution to a semipermeable membrane for the solvent (water) but not solutes. Such behavior involves a simple diffusion through the membrane, without "spending power". Osmosis is an important biological phenomenon for cellular physiology of living beings.
What is broadcast?
Diffusion is a physical process irreversible, in which material particles are introduced into an environment that was initially absent, increasing the entropy of the joint formed by the scattered particles or solute and the environment in which diffuse or solvent.
Usually diffusion processes are subject to the Fick's law. The permeable membrane may allow passage of particles and solvent always in favor of concentration gradient. The release process requires no energy input, often as a form of cellular exchange.
lunes, 1 de marzo de 2010