The daily cycle in light variation (light and dark) is reflected where? How does protein production in our cells change from night to day? What are some of the social and evolutionary benefits of circadian rhythms?   Describe the role of compartmentalization of the cell in evolution Summarize the role of circadian rhythms in disease in humans   What structure in the brain regulates the clock mechanisms in all of our cells? What is the most important environmental cue for resetting, or entraining, the circadian clock? What is the role of ganglion cells in circadian entrainment? Describe circadian rhythms in cyanobacteria   Come up with a comment or question in at least 4 sentences about the article