Active transport.
Substances naturally (passively) spread out evenly. This means there is a net movement from higher to lower concentrations. The process is diffusion, and no energy input is required.
For a substance to move the other way (up or against the concentration gradient) a supply of energy is required. This process (active transport) will not happen in non-living systems, but cells can supply energy, for example in the form of ATP.
True
DeFusion-Apex
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diffusion
diffusion
Active transport
Concentration Gradient
The movement of molecules from an area of high concentration of that molecule to an area of lower concentration is called simple diffusion.
Diffusion is the movement of particles from an area of high concentration to an area of lower concentration. Active transport is the movement of substances from lower to higher concentration across a semi permeable membrane that must have a specific protein carrier and cell expenditure of energy.
diffusion.
diffusion
diffusion
Active transport
Diffusion describes the spread of molecules through random motion from regions of higher concentration to regions of lower concentration.
Concentration Gradient
Diffusion is the process of spreading of the gaseous molecule according to their kinetic energy. In this process, particles move from an area of high concentration to an area of low concentration. If the perfume is sprayed in one corner of a room, it will be smelt soon after in the opposite corner.
Osmosis is the process of water moving from an area of low solute concentration to an area of high solute concentration.
Osmosis is the process of water moving from an area of low solute concentration to an area of high solute concentration.
Osmosis is the process of water moving from an area of low solute concentration to an area of high solute concentration.
Osmosis is the process of water moving from an area of low solute concentration to an area of high solute concentration.
Osmosis is the process of water moving from an area of low solute concentration to an area of high solute concentration.
Diffusion.