4. What does the amino acid chain form?

4. Explain and draw a representative picture of the four levels of protein structure. How are they defined and what bonds keep them together? ? What effect does the a

8. Glycoproteins can be found on the extracellular surface of cell membranes and are used to facilitate cell-cell interactions (connections, identification of cell type, and communication). How does the structure of this molecule allow for its function? How do you think the function of this glycolipid would change if 3 of the lipid was missing? Why?

4.) If a mutation in an organisms DNA causes the resulting protein to possess an alanine residue to be in the 13th position instead of a glycine, what level(s) of the resulting protein's structure would likely be affected? Why? Why would the other(s) not be affected? 14: