Some neuroscientists believe that our positive reactions to physical attractiveness are based in human evolution. They argue that humans’ attraction to beauty ensures the survival of the species. Can you think of a more sociologically based explanation for the impact of physical attractiveness as described in this chapter?

Diseases may arise when proteins fail to fold correctly in their last stages of processing and/or are directed towards the lysosome rather than towards the cell membrane. cystic fibrosis is an example of this type of disease. in cystic fibrosis, a functional ion channel is sent to the lysosome for destruction rather than being sent to the plasma membrane. given this observation, the cellular component that is most likely the cause of the disease is the