Harpo liked Robert Winston's "It's Elementary: Putting the Crackle into Chemistry" (Dorling Kindersley, 2007, 96 pp). Maybe a start, for that topic at least? In the same series is "Can You Feel the Force? Putting the Fizz back into Physics" by Richard Hammond (DK, 2006). Winston also wrote "What Makes Me, Me?" (DK, 2004), which has quite a lot about cells, as well as more general anatomy. All have lots of lovely pictures and fun graphic design, as you'd expect from DK.
Hope those might be of interest!
peace
minnie
