In this unit, students will explore the fascinating world of cells — the building blocks of all living things. They will learn what cells are, what structures they contain, and how these structures work together to keep organisms alive. By comparing animal, plant, and bacterial cells, students will discover the similarities and differences that make each unique.

The unit will also introduce why cells need to divide and how this process supports growth, repair, and reproduction. Students will examine the stages of the cell cycle and explore the role of DNA, genes, and chromosomes in inheritance. Finally, they will study the two main types of cell division — mitosis and meiosis — to understand how life continues and evolves.