Which activity can only be done by a transmembrane protein?

A trans membrane protein is a type of integral protein that is found in the entire cell membrane and the membrane protein is attached to the cell membrane.

Many trans membrane proteins functions as channel or gateway which allows the transport of the specific materials which cannot be transported through other means.

The other materials which cannot be transferred by simple diffusion, osmosis or other means is transported by the trans membrane proteins.

answer: that would be cheating

explanation:

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.