Chapter 7 – Adventures in Bodybuilding

1. Refer to the timeline on p.121 – what is most interesting to you about the timescale? Explain your reason.
2. What is the most common protein found in the human body? Name it and describe it.
3. Explain how cells “stick” to one another; give one example.
4. How do cells communicate with one another?
5. What are choanoflagellates and why have they been studied by biologists?
6. What are some of the reasons that “bodies” might have developed in the first place?