A membrane that lets only some things pass through it.
Proteins which form channels may be utilized to enable the transport of water and other hydrophilic molecules; these channels are often gated to regulate transport rate. In facilitated transport, hydrophilic molecules bind to a "carrier" protein; this is a form of passive transport
The parietal lobe contains the primary sensory cortex, which controls sensations such as touch or pressure.
During evaporation the sun heats a large body of water causing water vapor. What vapor is a gas. Evaporation is also apart of the water cycle, which evaporation in an important tool in the water cycle.
Remember this:
- When water is heated it turns into a gas.
-When water gets to 0°c water freezes.
-When ice is heated, it turns into a liquid.
