This document summarizes key aspects of cell structure and function: 1) Cells vary in size and shape and contain organelles like the nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus that carry out specific functions. 2) DNA is found in the nucleus and contains the genetic instructions for cells. It takes the shape of a double helix and replicates through semi-conservative replication. 3) Cells transport materials through passive diffusion, osmosis, and active transport processes that either require or do not require energy. 4) The cell cycle consists of interphase, mitosis and cytokinesis where cells grow and divide. Cancer occurs when cell cycle control is lost. 5) RNA carries messages from

1. Chapters 3 & 4 Cells, DNA, Mitosis & RNA

5. Cell Membrane

28. Mitosis

30. Differentiation

35. Protein Synthesis

36. Protein Synthesis