Choose ONE of the following questions and answer thoroughly with a 200-250 word main post.  

Why do we age? What appears to initiate the aging process and do we have any cellular mechanisms that control or facilitate this process?

Receptor-mediated endocytosis is a highly selective mechanism of ingesting molecules. How could it be used to kill cancer cells?

Main posts should be at least 200 words in length.  You should interact with at least two classmates, 50 word minimum per interaction.  Last day (Tuesday) posts will not receive full credit as they do not allow adequate opportunity for classmates to respond.  Please see the Discussion Forum Expectations document for more details on grading.  Main posts must have references in APA format to receive full credit. 

MUST BE IN APA FORMAT!!