7. Please list three epigenetic mechanisms on DNA or histones in regulating eukaryotic gene transcription.

(2) The second law of thermodynamics says "The level of disorder in the universe is steadily increasing. Systems tend to move from ordered behavior to more random behavior". The degree of randomness or disorder of a system is entropy. Based on the second law, could entropy be a driving force for protein structure? Why or why not. (5 points)