1. State the similarities (at least one) and differences (at least one) between bacterial motility and mammalian cell motility. State the similarities (at least one) and differences (at least one) between bacterial chemotaxis and mammalian chemotaxis.

2. In small world, micro-scale or nano-scale objects (molecule, cells) execute random walks due to thermal fluctuation. In this case, statistical analysis or ensemble average is helpful. Demonstrate ways (at least one) of quantifying cellular random motion, and ways of quantifying cellular chemotaxis (Use graphs and equations to show your work).