Cells can make proteins that need to be transported out of the cell and moved to another part of the body. cells also make carbon dioxide as a waste product of cellular respiration. proteins are large molecules; carbon dioxide is a small molecule. which best describes how the proteins and carbon dioxide are going to exit the cell?

Some substances pass through small holes in the surface cell membrane. This is called diffusion and does not require the cell to expend energy. Oxygen gets into a cell and carbon dioxide (the product of respiration reactions) leaves it this way.

multiple amino acids are linked together by peptide bonds, thereby forming a long chain. The long chain will coil together which creates a protein. After the proteins are made they are imported to the mitochondria or chloroplasts.

Sources have said that twitter is used to predict flu outbreaks but that is all i know. what are you trying to say?