A mixture of amino acids may be separated by electrophoresis. In an electrophoresis experiment, some amino acids move in different directions, some amino acids move at different speeds, and some amino acids do not move at all. Explain these observations.
A mixture of amino acids can also be separated using thin-layer chromatography. Identify the mobile and stationary phases in this type of chromatography. Mobile phase ………………… Stationary phase …………………
What process allows thin-layer chromatography to separate a mixture?
State three characteristics of DNA structure.
Some diseases are caused by a mutation in the DNA base sequence that results in one amino acid being replaced by another during protein synthesis. Suggest what changes to the interactions that produce the tertiary structure would arise from a mutation that replaced a valine residue with a serine residue.