Question

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?

Answer 1

The proteins will be transported through exocytosis; the carbon dioxide will diffuse through the membrane

Answer 2

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.