What is the function of glycoproteins?

1) to allow specific ions or molecules to pass freely
2) to serve as identification for the cell
3) to actively carry specific ions or molecules into the cell
4) to detect bacteria and other foreign bodies outside of the cell

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.

density and pressure

answeramino acids;