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.
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Answer:
D the current changes are mush smaller than in the past.
Solar power because it is never ending and has no emmisions
The correct option is IPSILATERAL. The anatomical path of a reflex is called reflex arc. An ipsilateral reflex arc is one in which the motor output occur on the same side of the body where the stimulus is detected. Apart from ipsilateral reflex arc, there are other two types, which are conlateral and intersegmental reflex arc.
