Agar Cell Diffusion Vanderbilt Student Volunteers for Science Summer, 2005 Training Presentation Important!!! Please use this resource to reinforce your understanding of the lesson! Make sure you have read and understand the entire lesson prior to picking up the kit! We recommend that you work through the kit with your team prior to going into the classroom. This presentation does not contain the entire lesson?only selected experiments that may be difficult to visualize and/or understand. I. Introduction (p.2) What is a cell? Cells are the structural and functional unit of all living organisms. How do cells grow? Most cells grow, but upon reaching a certain size, a cell will divide becoming two smaller cells. How do cells take in nutrients and get rid of wastes?