Answer:
Sometimes molecules cannot move through the cell membrane on their own. These molecules need special transport proteins to help them move across the membrane. Facilitated diffusion is the diffusion of substances with the help of transport proteins in the plasma membrane. These special proteins are called channel proteins or carrier proteins, and they are attached to the cell membrane. In fact, they go through the cell membrane, from the inside of the cell to the outside. Facilitated diffusion is used for molecules that cannot diffuse rapidly through cell membranes on their own, even when the molecules are moving from high to low concentration areas. An example is the sugar plants and animals use for energy, called glucose. Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient so it does not require the use of cellular energy.
This means that a single carbon atom can form up to tetravalent bonds with other atoms
The current projects of the Environmental Protection Act is to reduce the carbon footprint in the atmosphere which is responsible for the climate changes.
<u>Explanation:</u>
Environmental protection act is working to reduce greenhouse gases in the year 2020. And its its energy use and the fuel consumption for climate change in the atmosphere.
Environmental protection act is the independent agency of the US federal government for the environmental protectio. It has the responsibility of maintaining and enforcing the national standards under the variety of environmental law.
Answer:
refraction.
Explanation:
refraction is the bending of light whereas reflection is bouncing of the light.
